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

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

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

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

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