12 



 
                                                                                                
           L
           L
           L
           LLL eeeeee        G
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                        G
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                        G rrrrrr oooooo uuuuuu pppppp eeeeee        SSSSSS EE
                                                                      EEEE R
                                                                                 R
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                                                                                 RR
                                                                                 R IIIIII B
                                                                                          B
                                                                                          B
                                                                                       BB
                                                                                          B OOO
                                                                                                    OOO        eeeeee tttttt        llllll aaaaaa        B