declare a varchar2(10); b varchar2(10); begin for i in 65..90 loop for j in 65..90 loop if(i=65) then dbms_output.put_line(chr(j)); end if; if(i=66) then dbms_output.put_line(chr(i)||chr(j)); end if; if(i=67) then dbms_output.put_line(chr(i)||chr(j)||chr(j+1)); end if; end loop; end loop; end; /

declare
a varchar2(10);
b varchar2(10);
begin
for i in 65..90
loop
for j in 65..90
loop
if(i=65) then
dbms_output.put_line(chr(j));
end if;
if(i=66) then
dbms_output.put_line(chr(i)||chr(j));
end if;
if(i=67) then
dbms_output.put_line(chr(i)||chr(j)||chr(j+1));
end if;
end loop;
end loop;
end;
/