.

                                  
                   nasty nasty
                 nasty nasty nas
               nasty  nasty  nasty
              nasty nastynasty na
                 nastynastynasty
                 nasty nastynasty
                 nastynasty nasty
                 nasty nastynasty
                 nastynasty nasty
                 nasty nastynasty
                 nastynasty nasty
                 nasty nastynasty
                 nastynasty nasty
      nastynasty          nastynasty
    nastynastynas    tynastynasty
      nast  nastyn       astynast  yn
       astynastyn          astynasty

.
                                       ri
                                 o    ot     o
                               t       ri        t
                              r        o          r
                             i        t    r        i
                             o      i      o      o
                             t       t      r       t
                              r       i    o       r
                                i        t         i
                                    o         o
                                         T

.
                                      
                        ­             GO
                              O    PG     P
                            P       GO       G
                           G          P         O
                           O      G     O      P
                            P      P     G      G
                             G      O  P      O
                               O      G        P
                                  P    O     G
                                         P

.
                                       t
                               e     e s       e
                             s        t s          s
                            t           i             t
                           s         t     e         s
                           i         t       t         i
                            t          e   s         t
                               e         t         e  
                                 s       s       s
                                      t       t

.                                        c
                      ­             r     r     r
                                 o     oc      o
                               c        o          c
                              o         d           o
                            d        i       l        d
                            i          e     c          i
                             l            r              l
                                   e    o c     e

.
                                      B
                              u     u g     u
                            g       B u        g
                           B         g            B
                          u        B   u          u
                          g       g      B         g
                          B       u      g         B
                           u        B   u         u
                              g         g         g
                                 B      B      B
                                      u    u
                                         g

.
                                        P
                     ­           u    u i      u
                              i        s s         i
                             s          a           s
                            s         n    t         s
                            a        p     u        a
                            n        s     s        n
                              t        a   n        t
                                p        t         p
                                  u      P      u
             ­                        i           i