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