* 3bit Gray Conter State Machine Input File 
0 0s 0s 0s 1 -> 1 
1 0s 0s 1s 1 -> 2
2 0s 1s 1s 1 -> 3
3 0s 1s 0s 1 -> 4
4 1s 1s 0s 1 -> 5 
5 1s 1s 1s 1 -> 6
6 1s 0s 1s 1 -> 7
7 1s 0s 0s 1 -> 1