CREATE TABLE riddle(word1 VARCHAR2(32), word2 VARCHAR2(32) NOT NULL, word3 VARCHAR2(32));

INSERT INTO riddle VALUES (NULL                ,'A'                 ,NULL                );
INSERT INTO riddle VALUES ('COMPREHENSION'     ,'ABILITY'           ,'OLD'               );
INSERT INTO riddle VALUES (NULL                ,'ABOUT'             ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'ALWAYS'            ,NULL                );
INSERT INTO riddle VALUES ('SCIENCE'           ,'AND'               ,'PHYSICS'           );
INSERT INTO riddle VALUES (NULL                ,'ANY'               ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'AS'                ,NULL                );
INSERT INTO riddle VALUES ('SO'                ,'ASK'               ,'ABILITY'           );
INSERT INTO riddle VALUES (NULL                ,'BE'                ,NULL                );
INSERT INTO riddle VALUES ('POSSIBLY'          ,'BEEN'              ,'MARILYN'           );
INSERT INTO riddle VALUES ('GRAY'              ,'BETWEEN'           ,'EARS'              );
INSERT INTO riddle VALUES (NULL                ,'BEYOND'            ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'BUT'               ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'CANNOT'            ,NULL                );
INSERT INTO riddle VALUES ('SCIENTISTS'        ,'CARE'              ,'STRUCTURE'         );
INSERT INTO riddle VALUES (NULL                ,'CHALLENGES'        ,NULL                );
INSERT INTO riddle VALUES ('READING'           ,'COMPREHENSION'     ,'WRITING'           );
INSERT INTO riddle VALUES ('WILL'              ,'DICTIONARIES'      ,'THESAURI'          );
INSERT INTO riddle VALUES ('HUNDRED'           ,'DISTINCT'          ,'WORDS'             );
INSERT INTO riddle VALUES ('WHAT'              ,'DO'                ,'YOU'               );
INSERT INTO riddle VALUES ('THREE'             ,'DONE'              ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'DONT'              ,NULL                );
INSERT INTO riddle VALUES ('YOUR'              ,'EARS'              ,'SERIOUSLY'         );
INSERT INTO riddle VALUES ('ASK'               ,'ELBOW'             ,'WANT'              );
INSERT INTO riddle VALUES (NULL                ,'ELEVEN'            ,NULL                );
INSERT INTO riddle VALUES ('EVEN'              ,'ENCYCLOPEDIAS'     ,'BUT'               );
INSERT INTO riddle VALUES (NULL                ,'EVEN'              ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'FASHIONED'         ,NULL                );
INSERT INTO riddle VALUES ('ELBOW'             ,'FIVE'              ,'DONE'              );
INSERT INTO riddle VALUES (NULL                ,'FOUR'              ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'GOOD'              ,NULL                );
INSERT INTO riddle VALUES ('THAT'              ,'GRAY'              ,'MATTER'            );
INSERT INTO riddle VALUES (NULL                ,'GREASE'            ,NULL                );
INSERT INTO riddle VALUES ('PREFERENCE'        ,'HAS'               ,'ALWAYS'            );
INSERT INTO riddle VALUES ('RESULTS'           ,'HEY'               ,'LOOK'              );
INSERT INTO riddle VALUES (NULL                ,'HUNDRED'           ,NULL                );
INSERT INTO riddle VALUES ('IN'                ,'I'                 ,'THOSE'             );
INSERT INTO riddle VALUES (NULL                ,'IF'                ,NULL                );
INSERT INTO riddle VALUES ('ONE'               ,'IN'                ,'IS'                );
INSERT INTO riddle VALUES ('SINGLE'            ,'IS'                ,'TOUGH'             );
INSERT INTO riddle VALUES (NULL                ,'LEFT'              ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'LETTERS'           ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'LOOK'              ,NULL                );
INSERT INTO riddle VALUES ('WITH'              ,'MANY'              ,'LETTERS'           );
INSERT INTO riddle VALUES ('BETWEEN'           ,'MARILYN'           ,'THIS'              );
INSERT INTO riddle VALUES ('SOME'              ,'MATH'              ,'FIVE'              );
INSERT INTO riddle VALUES (NULL                ,'MATTER'            ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'MAYBE'             ,NULL                );
INSERT INTO riddle VALUES ('ELEVEN'            ,'MORE'              ,'LEFT'              );
INSERT INTO riddle VALUES ('ENCYCLOPEDIAS'     ,'MY'                ,'HAS'               );
INSERT INTO riddle VALUES ('REPEAT'            ,'OF'                ,'THEN'              );
INSERT INTO riddle VALUES ('GOOD'              ,'OLD'               ,'FASHIONED'         );
INSERT INTO riddle VALUES ('TO'                ,'ONE'               ,'DISTINCT'          );
INSERT INTO riddle VALUES ('HEY'               ,'ONLY'              ,'MORE'              );
INSERT INTO riddle VALUES (NULL                ,'OR'                ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'PARAGRAPH'         ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'PHYSICS'           ,NULL                );
INSERT INTO riddle VALUES ('DICTIONARIES'      ,'POSSIBLY'          ,'MY'                );
INSERT INTO riddle VALUES (NULL                ,'PREFERENCE'        ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'PROBABLY'          ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'READERS'           ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'READING'           ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'REALLY'            ,NULL                );
INSERT INTO riddle VALUES ('CANNOT'            ,'REPEAT'            ,'ANY'               );
INSERT INTO riddle VALUES (NULL                ,'REQUIRE'           ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'RESULTS'           ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'SCIENCE'           ,NULL                );
INSERT INTO riddle VALUES ('GREASE'            ,'SCIENTISTS'        ,'DONT'              );
INSERT INTO riddle VALUES (NULL                ,'SERIOUSLY'         ,NULL                );
INSERT INTO riddle VALUES ('MANY'              ,'SHOULD'            ,'USED'              );
INSERT INTO riddle VALUES ('A'                 ,'SINGLE'            ,'PARAGRAPH'         );
INSERT INTO riddle VALUES ('REQUIRE'           ,'SKILLS'            ,'BEYOND'            );
INSERT INTO riddle VALUES ('AND'               ,'SO'                ,'DO'                );
INSERT INTO riddle VALUES ('I'                 ,'SOME'              ,'BEEN'              );
INSERT INTO riddle VALUES ('ABOUT'             ,'STRUCTURE'         ,'THEY'              );
INSERT INTO riddle VALUES ('CHALLENGES'        ,'SUCH'              ,'AS'                );
INSERT INTO riddle VALUES (NULL                ,'THAT'              ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'THEM'              ,NULL                );
INSERT INTO riddle VALUES ('THEM'              ,'THEN'              ,'PROBABLY'          );
INSERT INTO riddle VALUES ('THESAURUSES'       ,'THESAURI'          ,'OR'                );
INSERT INTO riddle VALUES (NULL                ,'THESAURUSES'       ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'THEY'              ,NULL                );
INSERT INTO riddle VALUES ('SUCH'              ,'THIS'              ,'SKILLS'            );
INSERT INTO riddle VALUES ('OF'                ,'THOSE'             ,'SHOULD'            );
INSERT INTO riddle VALUES ('FOUR'              ,'THREE'             ,'TWO'               );
INSERT INTO riddle VALUES ('TRYING'            ,'TO'                ,'TYPE'              );
INSERT INTO riddle VALUES ('REALLY'            ,'TOUGH'             ,'IF'                );
INSERT INTO riddle VALUES (NULL                ,'TRYING'            ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'TWO'               ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'TYPE'              ,NULL                );
INSERT INTO riddle VALUES ('BE'                ,'USED'              ,'MAYBE'             );
INSERT INTO riddle VALUES (NULL                ,'UTILIZE'           ,NULL                );
INSERT INTO riddle VALUES ('CARE'              ,'WANT'              ,'ONLY'              );
INSERT INTO riddle VALUES (NULL                ,'WHAT'              ,NULL                );
INSERT INTO riddle VALUES ('READERS'           ,'WILL'              ,'UTILIZE'           );
INSERT INTO riddle VALUES (NULL                ,'WITH'              ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'WORDS'             ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'WRITING'           ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'YOU'               ,NULL                );
INSERT INTO riddle VALUES (NULL                ,'YOUR'              ,NULL                );

COMMIT;