Hi. I want to create table like this:

create table ttt
(
   col1 varchar2(2),
   col2 varchar2(2),
   col3 varchar2(2),
   col4 varchar2(2),
   col5 varchar2(2)
);

with this procedure, but it does not work. May you help me?

declare
  str varchar2(200);
  i int;
begin
  for i in 1 .. 5 loop
  begin
    str:=’str’||i||”;
  end;
  end loop;
  execute immediate ‘create table t1 (“str” varchar2(2) )’;
end;
/

Thanks in advance.