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

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

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

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

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