Textonyms

When entering text on a phone's digital pad it is possible that a particular combination of digits corresponds to more than one word. Such are called textonyms.

Textonyms is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.

Assuming the keys are as follows:

    2 -> ABC
    3 -> DEF
    4 -> GHI
    5 -> JKL
    6 -> MNO
    7 -> PQRS
    8 -> TUV
    9 -> WXYZ  

The task is to write a program that finds textonyms in this list of words Textonyms/wordlist

Extra credit:

Use a word list and keypad mapping other than English.