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