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

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

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

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

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