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

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

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

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

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