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

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

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

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

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