stdout problem...

I have a dictionary with 17567509 passwords...

for example I have two rule files:

case_u.rule:
u

and

case_l.rule:
l

When I run the script:
hashcat --stdout -a 0 my.dic -r case_u.rule -o out1.dic

and other script:
hashcat --stdout -a 0 my.dic -r case_l.rule -o out2.dic


Files out1.dic and out2.dic files have different number of lines in the output of the work...
Why does this happen?
All three files must have the same number of lines!