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

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

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

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

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