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

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

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

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

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