Using regular expression in Notepad++ select first 2 characters and 3,4 character from md5 hash?

Question

Notepad++

We have an md5 hash, for example c1c425268e68385d1ab5074c17a94f14
1) with which regular expression should we select only the first 2 characters to get c1?
2) what regular expression to select only the 3rd and 4th character to get c4?

Answer 1

Find: ^(..).+
Replace: $1
Find: ^..(..).+
Replace:$1