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

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

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

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

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