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

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

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

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

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