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

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

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

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

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