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

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

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

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

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