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