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