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

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

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

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

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