$1::
                 $1-++-
                $1-++++-
               $1-++++++-
              $1=+++==+++=
             $1=+++=  =+++=
            $1=+++=    =+++=
           $1:+++=      =+++:
           $1-+++-      -+++-
           $1:+++=.     .=+++:
         $2.. $1-++++=--=+++++++=:
       $2.:::. $1:=++++++++===++++=.
     $2.::::.    $1.:----:.   $1.-++++-
    $2.::::.       .::.       $1.++++-
   $2.:::.        .:::.        $1.=+++-
  $2.::::.      ..:::: $1.=-.     .++++=
 $2.::::::::::::::::. $1.+++++++++++++++=
$2''''''''''''''''''   $1'''''''''''''''''