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

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

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

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

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