Remember this:
21 IQ ITEM 47
It can be de-encoded with any phone pad, or you can just write one down yourself on a paper.
In order to remember "21 IQ ITEM 47", I would go with "Hitman:Codename 47 had 21 missions, which were each IQ ITEM's by themselves".
Or "I clean teeth at 21:47 every day, because I have high IQ and don't like items in my mouth".
