[8i] - u--y [5i] - u--- 6--i u i o [4p]-o u-y t- [8i] - u--y [5i] - u-y t o 3---- 4---- [8i] 8 8 [8u] 8 8 8 [8y] [5i] 5 5 [5u] 5 5 5 5 6 6 6 6 [6i] [6u] [6i] [6o] [4p] 4 [4o] [4u] 4 [4y] [4t] 4 [8i] 8 8 [8u] 8 8 8 [8y] [5i] 5 5 [5u] 5 [5y] [5t] [5o] 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4