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

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

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

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

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