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