def METHOD_NAME(Str):
    for i in range(len(ExistingValueToBeReplaced)):
        Result = re.search(ExistingValueToBeReplaced[i][0], Str)
        if Result is not None:
            Str = Str.replace(ExistingValueToBeReplaced[i][0], ExistingValueToBeReplaced[i][1])
            break
    return Str