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It's a 7 letter word. If we remove 1 letter from it, it remains the same. If we remove 2 letters from it, it remains the same. If we remove 3 letters from it, it remains the same. If we remove 4 letters from it, it remains the same. If we remove 5 letters from it, it remains the same. If we remove 6 letters from it, it remains the same. If we remove all letters from it, it remains the same. What is it?