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