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# ____ ____ ____ ____ # __|A |___________|B ||Z |____|Z |_______ # # ____ ____ ____ ____ # _______|Z ||D |___________|E |____|Z |__ # # 0 1 A 2 1 A 0 2 Z 2 2 Z 2 2 D 4 2 D 2 1 B 4 1 B 4 1 Z 6 1 Z 4 2 E 6 2 E 6 1 Z 8 1 Z 6 2 Z 8 2 Z