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

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

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

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

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