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

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

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

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

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