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