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board = [["o","a","a","n"],["e","t","a","e"],["i","h","k","r"],["i","f","l","v"]], words = ["oath","pea","eat","rain"]
["oath","eat"]
board = [["a","b"],["c","d"]], words = ["abcb"]
[]
Time Complexity
Space Complexity
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Initializing the Trie structure to efficiently search for multiple words.