FFFFFFFFFFFFFFFFF
F
F
F
F
FFFFFFFFFFF
F
F
F
F
 
U              U
U              U
U              U
U              U
U              U
U              U
 U            U
 U            U
   U        U
     UUUUUU
      CCCCCC
    C        C
  C           C
 C
C
C
C             C
 C           C
  C         C
    CCCCCCC
K             K
K           K
K         K
K      K
K K   K
K   K
K     K
K       K
K          K
K            K