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

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

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

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

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