1                    .:..
 2                 ..:::......
 3           $2.$1   .$2.$1.....
 4           $2+=$1...$2==$1....
 5   ......:.$3:-$2:$1..$3+*$2=$1....
 6            $2:----::$1......
 7          $2.=***##*+=:    $1..
 8         $2=$3***######*$2=
 9          $2.$3-*######+
10         $2:+$3###%%%###$1:
11         $2-+*$3########+$1.
12         $2=++*$3#######$1-
13        $2-+=+**$3*####$1=
14     $1.$2-=++==***$3##*$1-
15    $2-++++++==++++=
16  .-+++**+++=+===$1.
17$2:---===++++=-=--$1.
18$2-===============$1-==--:
19$2.-==+++***++*$3*#########$1=:::.
20 $2.-=++++*++++**$3#######%%###$1=
21   $2.:==++++++**$3#############$1:
22            $2.$1-+*++*+++==$3###$1+
23                       -$3*+$1: