$31ua$2
                  $3MMM1ua$2
 $1MM$2EE        $3 MMMMM1uazE$2
$1MM $2EEEE     $3M1MM1uazzEn $2EEEE  MME
    EEEEE  $3MMM uazEno $2EEEE
    EEEEE$1MMMMMMEno~; $2EE          E$2
     EE $1MMMMMMMM~;;E  $2MMMMM      M $2
     E $1MMMMMMMMM          $2  E  E   $2
      $1MMMMMMMMMMM
           $1MMMMMMMMM $2EE $1
                MM1MMMM $2EEE $1
                     MMMMM
                          MMM
                              M