P1                                                                                                         P2

      
                                                P3                                                                                                         P4

      
                                                P5                                                                                                         P6

      
                                                P7                                                                                                         P8

---

      
                                                B1                                                                                                         B2

      
                                                B3                                                                                                         B4

      
                                                B5                                                                                                         B6

      
                                                B7                                                                                                         B8