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

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

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

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

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