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

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

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

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

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