-+:
                =+++-
              .=+++++=
             :+++++++++.
$2.8.......   $1-++++*++++++:$2      ...88
 .8888888..$1-+++++*+++++*+:$2..8888888
  .8888888=8===$1=++++==$2==8888888888
   .88888==========88888888888888
    .888========888=888888888888.
     8=======888888====88888888.
      8====88888888======88888.
       888888888888=========8.