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