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

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

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

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

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