[8s]-[7s] d [8f] [7i] [^f]- [8g]-[6f] * [9d]-- [6d]-[5d] [8f] [^g] u [8g]- [^h] u [^f]-[8s]---- [8s]- [7s] d [8f] i [^f]- [6g]-[6f]-[9d]-- [9d] 8 [7d] [5f] [6g] ^ [8g] 9 [0h]-[3f]-[6s]-- [6s]-[8f]-[8h]-[^h]- [6j]-[5k]-[6l]-- [el]-[(k] j [0h]-[6g] f [7d]-[3f]-[6s]---- [4s] r [5f]-[7h] r [8h]- [qj] t [wk] Y [el]-- [8l]-[7k] j [0h]-[6g] f [7d]-[3f] O [6s]