Having just dove deeper in to obfus stuff, let me see if I've got this one..
# Not an issue.. normal stuff
@a=qw(kvtu bopuifs qfsm ibdlfs);
# Shift each letter down one.
foreach(@a){
$_=~tr/b-y/a-z/;
}
# Print out the JAPH
for(@a){
print "@a\n";
# Put the first element on the end of @a
$a=shift(@a);
push(@a,$a);
} # Later, rinse, repeat