In the most difficult of cases, the letter “o” looks like a single line, most like an “i.” The first part of the letter is mostly vertical or a sharp angle with no curve; the second part of the letter, which should be the closing loop, instead travels to the right as if it is an element of the letter that follows.

In some instances, the “o” appears like an “i” or "r" and is also part of a larger group of letters such as in “tion” and “tions” combinations.