| Haystacks with some needles hidden throughout. | |
| test0/ : no needles, just hay | |
| test1/ : needle is i2c-0, hay is in i2c-1 and i2c-2 | |
| test2/ : needle is i2c-1, hay is in i2c-0 and i2c-2 | |
| test3/ : needle is i2c-2, hay is in i2c-0 and i2c-1 | |
| test4/ : needles are in i2c-0 and i2c-2, hay is in i2c-1 |