Permutations

Try to solve the Permutations problem.

We'll cover the following

Statement

Given an input string, return all possible permutations of the string.

Note: The order of permutations does not matter.

Constraints:

  • All characters in word are unique.

  • 1≤1 \leq word.length ≤6\leq 6

  • All characters in word are lowercase English letters.

Examples

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