On Sunday 2006-04-30 12:02 +0300, Aleksey Cheusov output:
:> However, putting the last word (1_VIIR3) elsewhere and readding EOL match
:> gives the correct answer.
[...]
:I could not make regexp and input less,
:because lots of other simple manipulations lead to to match too.

No, I didn't expect it.  I just illustrated that to help isolate the problem.

Regards,
Geoff