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

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

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

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

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