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

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

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

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

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