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

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

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

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

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