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

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

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

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

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