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