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