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

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

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

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

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