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

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

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

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

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