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

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

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

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

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