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

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

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

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

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