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