Question: Phone numbers and PIN codes can be easier to remember when you find words that spell out the number on a standard phone pad. For

Phone numbers and PIN codes can be easier to remember when you find words that spell out the number on a standard phone pad. For example, instead of remembering the combination 5282, you can just think of JAVA. Write a recursive method that, given a number, yields all possible spellings (which may or may not be real words).

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