my $str = <<EO_STR;
must-column08:Submit & must-column10:Delivered
must-column08:Submit & must-column10:Delivered One & must-column9:No_error
must-column08:See Here & must-column10:Delivered | must-column9:No_error
EO_STR


my @array = *some_regex*;

foreach my $element (@array)
{
    print "$element\n";
}

Needed output:

must-column08:Submit 
&
must-column10:Delivered
must-column08:Submit 
&
must-column10:Delivered One
&
must-column9:No_error
must-column08:See Here
&
must-column10:Delivered 
|
must-column9:No_error