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

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

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

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

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