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

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

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

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

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