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