

             1
             v
             g
           CTUgO T   C
          TPIUUg#tv#TG
         #tggUgUggggggTv
         ggUUUUUUUUbUUgg
         UUUbUUbUUUUbUUU
           UUUUUUUUUUU 
              UUUbU 
E