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