In this example there are 6 locations and 4 samples. A "1" indicates aberration in that sample at that location. A "O" indicates no aberration. Rows must be tab-delimited.
| loc1 | loc2 | loc3 | loc4 | loc5 | loc6 | |
| sample1 | 0 | 0 | 1 | 1 | 0 | 1 |
| sample2 | 0 | 1 | 1 | 0 | 0 | 0 |
| sample3 | 0 | 0 | 1 | 1 | 1 | 0 |
| sample4 | 0 | 0 | 0 | 1 | 1 | 1 |