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