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

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

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

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

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