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.#.SUBTRACTION.#.................................
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.13X9.#.A.#......................................
.01X4.#.B.#......................................
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...4zT0zyxwvutsrqponmlkjihgfedcba987654321.......
...A9w...........................................
.rV5.............................................
............Vr...................................
.#.RESULT.#.5....................................
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