0            37337246
                   |            |
original file:     |abcdefghijk |
                   | |       |  |
with inserted 'x': |xbcdefghijjk|
(corrupted)        | |       |  |
                   | |       |  |
with inserted 'x': |xabcdefghijk|
(correct)            |       |
                     |       |
                     32768   36700160