Each one of the four keys locks exactly one pad lock. Every letter on a padlock stands for exactly one digit. Same letters mean same digit s. Which letters must be written on the fourth padlock?
Each one of the four keys locks exactly one pad lock. Every letter on a padlock stands for exactly one digit. Same letters mean same digit s. Which letters must be written on the fourth padlock? Guess the letters? - candidate answer list

Guess the letters?

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