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