print STDOUT "out 1\n";
print STDOUT "out 2\n";
print STDOUT "out 3\n";

print STDERR "err 4\n";
print STDERR "err 5\n";
print STDERR "err 6\n";

print STDOUT "out 7\n";
print STDOUT "out 8\n";
print STDOUT "out 9\n";

print STDERR "err A\n";
print STDERR "err B\n";
print STDERR "err C\n";