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tt                                                                 tt
tt        *                bbb                                     tt
tt     bbb                                tttt            *        tt
tt              bbb                       tttt            bbb      tt
tt                                                  *              tt
tt  *      tttt           *      bbb               bbb             tt
ttbbb      tttt         bbb                                        tt
tt                                     *********                   tt
tt                                     bbbbbbbbb                   tt
tt     bbb                  bbb                   bb        bbbb   tt
tt *               *                                               tt
ttbbb             bbb      tttt             *                      tt
tt                         tttt           bbbb            P        tt
tt          *                    *                      bbb        tt
tt        bbbb                   bbbb                              tt
tt                                                                 tt
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