If you compare upper-case I and lower-case L side by side, L is taller and I is shorter. You can also paste them into something like MS Word and then change the font to Baskerville. In Baskerville, it’s easy to see that the fourth character is a capital I. The next character is not so clear but the next one is definitely the numeral 1, which makes the character after the capital I a lowercase L. You can tell that the next two characters are not the same – one is a zero, one is a capital O.