A pangram is a sentence that contains every letter of the alphabet, e.g. "The quick brown fox jumps over a lazy dog."
This page will help you compose your own. Type in the text area and I'll show you the letters you have not included yet. Don't worry about case or punctuation.
You'll find it is very tricky to write a short, sensible sentence with proper grammar using every letter in the alphabet from a to z, but just try; I won't nix your quest.