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

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

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

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

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