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