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

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

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

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

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