drop table avtest;

create table avtest
  (pk number primary key,
   text clob);

insert into avtest values (1, 'cat');
insert into avtest values (2, 'cat dog');
insert into avtest values (3, 'cat dog rabbit');
insert into avtest values (4, 'cat dog rabbit fish');
insert into avtest values (5, 'cat rabbit');
insert into avtest values (6, 'cat rabbit fish');
insert into avtest values (7, 'cat fish');
insert into avtest values (8, 'cat dog fish');
insert into avtest values (9, 'dog');
insert into avtest values (10, 'dog rabbit');
insert into avtest values (11, 'dog rabbit fish');
insert into avtest values (12, 'dog fish');
insert into avtest values (13, 'rabbit');
insert into avtest values (14, 'rabbit fish');
insert into avtest values (15, 'cat dog cat dog cat');
insert into avtest values (16, 'cat dog cat dog cat rabbit');
insert into avtest values (17, 'cat dog cat dog cat rabbit fish');
insert into avtest values (18, 'cat dog cat dog cat fish' );
commit;