Since you are dealing with an object, you should use the methods provided by your class to retrieve the values that you need (as suggested by davido in his post). If it were a reference to a simple AoA (not a blessed object), then you could have something like this:

$perl -e '
> use strict;
> use warnings;
>
>
>
my $mref = [
  [ '5', '4', '4', '2', '4' ],
> my $mref = [
>   [ '5', '4', '4', '2', '4' ],
>   [ '9', '6', '4', '4', '3' ],
>   [ '2','73','96', '6', '8' ],
>   [ '2', '4', '9','87', '8' ],
>   [ '2', '4','10', '6', '8' ],
> ];
>
> for my $rows (@$mref) {
>      local $" = "\t";
>      print "@$rows \n";
>      }
> '
5       4       4       2       4
9       6       4       4       3
2       73      96      6       8
2       4       9       87      8
2       4       10      6       8
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