[1w] w w w [1t]-[1t]- [5r]-[5r]-[8w]-- [8t] t t t [7y]-[7y]- [8t]-[8t]-[5r]-r- [6e] e e [5r] [8t]-[8t] t [5r]-[5y]-[8t]-- [4e]--[5w]-- [5w] w [5w]-[8w] 7 6 5 [4e]-e-[5w] - w [5w] w [5w]-[8w]-- [8t]-[7r] [6e] [5w]-[10]- [10]--[10]-- [8t]-[7r] [6e] [5w]-[10]- [10]--[10]-- [1w]-[1t] t [4e]-4- [2t] 3 [4e]-[5w]-5 w [5w] w q-[1w]