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