Sanity checker for wrongly parsed characters

[anuran-roy]

Some characters might not be detected correctly in the OCR. A hacky but probable method to correct them can be using a dictionary that stores commonly mistaken characters, with the list of characters they are mistaken for, like this:

{
   1: ["l", "I", "i", "L", 7, 4],
   2: ["Z", "z"],
   3: [8, "e",]
...
}