[37]--[48]-[59]- [37]---- [37]--[48]-[59]- [60]-[59] [48] [37]-- [37]--[48]-[59]- [37]---- [37]--[48]-[59]- [^q]-[59] [48] [37] - 4 3-0-0-q- q - W 0 - 4 3-0-0-q- q - 0 W - 4 3-W-W-e- e - W r - 4 3-r-e-W- q - W 0-- [37]--[48]-[59]- [37]---- [37]--[48]-[59]- [60]-[59] [48] [37]-- [37]---- [37]