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

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

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

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

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