(0 18 16 11 9)(1 20 19)(2 21 4)(3 7 5)(6 10 8)(12 15 13 17 14)
ALLOWS (11/8)-SEQUENCE
1: (1 12 15)
(0 18 16 11 9)(1 13 17 14 12 20 19)(2 21 4)(3 7 5)(6 10 8)(15)
2: (13 17 20)
(0 18 16 11 9)(1 13 19)(2 21 4)(3 7 5)(6 10 8)(12 20 14)(15)(17)
3: (0 18 16)
(0 11 9)(1 13 19)(2 21 4)(3 7 5)(6 10 8)(12 20 14)(15)(16)(17)(18)
4: (12 20 14)
(0 11 9)(1 13 19)(2 21 4)(3 7 5)(6 10 8)(12)(14)(15)(16)(17)(18)(20)