all work   all work   all work     all work

                AND NO PLAY MAKES JACK A DULL BOY

  all work  all work       all work      all work
         all work    all work   all work
 all work          all work   all work          all work
    all work        all work       all work
          all work          all work       all work
        all work  all work   all work all work
  all work      all work    all work      all work
    all work        all work       all work