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