D
                                                                                      D
                                                                                      D
       BBBBBBCCCCCCCCCCCCCCSSSSSCCCCCCCCCCCCCCCCCCCCCCCCC                             D
                                                                           C          D
                                                                          CC          D
             SGCCCSSSSSCCCCCGCCCC            DDDDBBBCCCCCCCCCCCCC        CCC          D
                                                                        CCCC          D
                                                                       CCCCC          D
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF    FF    FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD    DD    DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD    DD    DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD