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

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

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

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

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