use strict;
use warnings;

while (<DATA>) {
   my @cols = split;
   shift @cols;
   my $all_r = 1;
   for my $c (@cols) {
      if ($c ne 'r') {
         $all_r = 0;
         last;
      }
   }
   print if $all_r;
}

__DATA__
0  a b h
1  - r z
3  u - u
4  r x r
5  r t r
6  r r r
7  r r r
8  r r r