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

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

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

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

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