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

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

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

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

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