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

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

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

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

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