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

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

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

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

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