y           y  pppppppp     eeeeeeeeeeeee

tttttttttttttttttttttt   y          y   p      pp    e

ttt         t               y         y    p       p   e
tttttttttttt           rrrrrr                 uu    eeeeeeeeeeeeeee
t                y      yy     p      pp    ee
        t   tttttt    rr    rr         u       u    e
t                 y    yy      p     pp      e
        t             r      r         u       u    e
t                   y yy        pppppp        e
        t             r       r        u       u    e
t                   yyy         p             e
        t             r      rr        u       u    e
t                    y          p             eeeeeeeeeee
        t              r  rrr          u      uu    eeeeeeeee
t                    y          p             e
        t              r rr            u      u     e
t                   y           p             e
        t              r   rrrr        u      u     e
t                   y            p             e
        t              r       rr      u     uu     e
t                   y            p             e
         t             r         rrr   u   uuu      eeeeee
t                   y            p             e
         t             r           rr  uuuuu             eeeeeeeeee
t                   y            p             eeeeeeeeeee
         t             r
t                   y            p

t