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

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

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

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

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