select distinct cname
from   customers
where  cno in (select cno
               from   orders
               where  ono in (select ono
                              from   odetails
                              where  pno in (select pno
                                             from   parts
                                             where  price < 20.00 and pno in
  (select cno   
   from   orders    
   where  ono in (select ono    
                  from   odetails    
                  where  pno in (select pno    
                                 from   parts    
                                 where  price < 20.00 and pno in
(select eno
from employees
where ename in (select cname
                from customers
                where cname = 'Raj'))))))));


