1. 76.
    0
    up
    up
    up
    up
    up

    up
    up
    up
    up
    up

    up
    up
    up
    up
    up
    ···
  2. 77.
    0
    up
    up
    up
    up
    up

    up
    up
    up
    up
    up

    up
    up
    up
    up
    up
    ···