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