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