1. 1.
    0
    upuppupppu
    ···
  2. 2.
    0
    upupupupup
    ···
  3. 3.
    0
    upuppupu
    ···
  4. 4.
    0
    upupuppupu
    ···
  5. 5.
    0
    uppupup
    ···
  6. 6.
    0
    upuppupup
    ···
  7. 7.
    0
    upupupppup
    ···
  8. 8.
    0
    up up up
    ···