my @row1 = qw(71 22 15 10 51);
my @row2 = qw(91 82 28 11 91);
my @row3 = qw(11 72 37 58 20);
my @row4 = qw(21 42 63 24 16);
my @row5 = qw(81 32 53 54 42);

my @rows = ( \@row1, \@row2, \@row3, \@row4, \@row5 );