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SillyStringUtils.sol:

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.17;

library SillyStringUtils {

struct Haiku {
string line1;
string line2;
string line3;
}

function shruggie(string memory _input) internal pure returns (string memory) {
return string.concat(_input, unicode" 🤷");
}
}