Connect by level - with multiple inpur rows

Question

Very simplified I have this table - it has a "table" like structure in varying length.
I need x output row for each input row (not using pipelined function og PL/SQL)
Wih only one row as input to the "connect by" - it works of course.
drop table test3;
create table test3 (id number, tekst varchar2(20));
insert into test3 values (1, 'acbdef');
insert into test3 values (2, '123');
insert into test3 values (3, 'HUUGHFTT');
insert into test3 values (4, 'A');
insert into test3 values (5, 'AKAJKSHKJASHKAJSHJKJ');
commit;
with tal as
select * from
(select a.*, rownum rn
from test3 a)
where rn < 2)
select tekst, level ,
substr(tekst,(level-1)*1+1, 1) content
from tal
connect by level < length(tekst)
;How do I achieve the same thing for multiple input rows ?
I know I can make in PL/SQL using either plan pl or just a pipelined function, but I prefer a clean SQL if possible.
I have tried to do it in a cross join test3 and (select various values from dual from the test3 table) and other versions, but all with syntax errors
with tal as
select * from
(select a.*, rownum rn
from test3 a)
where rn < 3)
select * from test3 cross join table
select tekst, level ,
substr(tekst,(level-1)*1+1, 1) content
from dual
connect by level < length(tekst)
;Oracle version will be 10.2 and 11+

Answer 1

I think this is kind of what you're looking for:
with tal as
( select 1 id, 'acbdef' tekst         from dual union
  select 2   , '123'                  from dual union
  select 3   , 'HUUGHFTT'             from dual union
  select 4   , 'A'                    from dual )
select  id, tekst, level, substr(tekst,(level-1)*1+1, 1) content
  from  tal
connect by (    level <= length(tekst)
           and  prior id = id 
           and  prior dbms_random.value is not null
        ID TEKST         LEVEL CONTENT
         1 acbdef            1 a      
         1 acbdef            2 c      
         1 acbdef            3 b      
         1 acbdef            4 d      
         1 acbdef            5 e      
         1 acbdef            6 f      
         2 123               1 1      
         2 123               2 2      
         2 123               3 3      
         3 HUUGHFTT          1 H      
         3 HUUGHFTT          2 U      
         3 HUUGHFTT          3 U      
         3 HUUGHFTT          4 G      
         3 HUUGHFTT          5 H      
         3 HUUGHFTT          6 F      
         3 HUUGHFTT          7 T      
         3 HUUGHFTT          8 T      
         4 A                 1 A