How to insert characters in positions greater than 35?

[sgiova]

I have what I know is a long password to crack (longer than 35 characters), but don't know how to use the "Insert" rule for passwords this long. According to the documentation, you can insert a character "X" at position "N" using "iNX". The documentation also says:

* Indicates that N starts at 0. For character positions other than 0-9 use A-Z (A=10)

What do you use for a character position greater than "Z"?

**Edited because I'm bad at math. "Z" would be the 35th character.