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function sortTokens(address tokenA, address tokenB) internal pure returns (address token0, address token1);
function pairFor(address factory, address tokenA, address tokenB) internal pure returns (address pair);
function getReserves(address factory, address tokenA, address tokenB)
internal
view
returns (uint256 reserveA, uint256 reserveB);
function quote(uint256 amountA, uint256 reserveA, uint256 reserveB) internal pure returns (uint256 amountB);
function getAmountOut(uint256 amountIn, uint256 reserveIn, uint256 reserveOut)
internal
pure
returns (uint256 amountOut);
function getAmountIn(uint256 amountOut, uint256 reserveIn, uint256 reserveOut)
internal
pure
returns (uint256 amountIn);
function getAmountsOut(address factory, uint256 amountIn, address[] memory path)
internal
view
returns (uint256[] memory amounts);
function getAmountsIn(address factory, uint256 amountOut, address[] memory path)
internal
view
returns (uint256[] memory amounts);