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