order_id, time_mins
096000BN, 32 
096000BP, 85 
096000BG, 132 
096000Be, 85 
096000BP, 32
& etc.... ...

##</code><code>##

my %hash;
while (<>)
{ my ($id,$time) = split /,/;
  push @{$hash{$id}}, $time;
}
for (keys %hash)
{ print "@{$hash{$id}}\n";
}