QWERTY Prime Test

Prompt

You are given a standard qwerty keyboard with each key mapped from 1 to 26 e.g. q=1, p=10, a=11, z=20, m=26 List out the prime numbers from 1 to 26 and map them to letters. Now with those letters, give me all of the possible 7 letter and 6 letter words, which must be in the standard UK English dictionary.