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

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

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

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

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