*           a   a   a   a   b   b   b   b   c
*           4   3   2   1   4   3   2   1   0
0.000       0s  0s  0s  0s  0s  0s  0s  0s  0s
100.0ns     1s  1s  1s  1s  1s  1s  1s  1s  0s
200.0ns     0s  1s  1s  1s  0s  1s  1s  1s  1s
300.0ns     0s  0s  0s  1s  0s  0s  0s  0s  0s
400.0ns     0s  0s  0s  1s  0s  0s  0s  1s  0s
500.0ns     0s  0s  1s  0s  0s  0s  0s  1s  0s
600.0ns     0s  0s  1s  0s  0s  0s  1s  0s  0s
700.0ns     1s  0s  1s  0s  0s  0s  1s  0s  0s
800.0ns     1s  0s  1s  0s  0s  0s  1s  1s  0s
900.0ns     1s  0s  1s  0s  0s  1s  0s  0s  0s
1.000us     1s  0s  1s  0s  0s  1s  0s  1s  0s
1.100us     1s  0s  1s  0s  0s  1s  0s  1s  1s
1.200us     0s  0s  0s  0s  0s  0s  0s  0s  1s
1.300us     1s  0s  0s  0s  1s  0s  0s  0s  0s