(0 4 2)(1 20 13)(3 19 17)(5 10 8)(6 15 7)(9 14 12)(11 18 16)
ALLOWS (11/8)-SEQUENCE
1: (11 18 20)

(0 4 2)(1 20 16 11 13)(3 19 17)(5 10 8)(6 15 7)(9 14 12)(18)
2: (3 19 17)

(0 4 2)(1 20 16 11 13)(3)(5 10 8)(6 15 7)(9 14 12)(17)(18)(19)
3: (11 13 16)

(0 4 2)(1 20 16)(3)(5 10 8)(6 15 7)(9 14 12)(11)(13)(17)(18)(19)
4: (9 14 12)

(0 4 2)(1 20 16)(3)(5 10 8)(6 15 7)(9)(11)(12)(13)(14)(17)(18)(19)