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

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

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

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

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