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

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

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

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

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