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

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

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

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

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