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

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

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

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

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