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Shared from Scratch 2 Offline Editor Telephone code is a relatively easy code to learn. Grab a phone and look at the keypad. You should see 3 letters on each number except 7 and 9. They have 4. To turn a letter into telephone code, you find witch number the letter is on, then count how many spaces it is. Then combing the number it is on the keypad with the number of spaces it is from the 1st one. Continue until you'r done!