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

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

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

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

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