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

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

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

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

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