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

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

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

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

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