def umlauts(text):
    """
    Replace umlauts for a given text
    
    :param word: text as string
    :return: manipulated text as str
    """
    
    tempVar = text # local variable
    
    # Using str.replace() 
    
    tempVar = tempVar.replace('ä', 'ae')
    tempVar = tempVar.replace('ö', 'oe')
    tempVar = tempVar.replace('ü', 'ue')
    tempVar = tempVar.replace('Ä', 'Ae')
    tempVar = tempVar.replace('Ö', 'Oe')
    tempVar = tempVar.replace('Ü', 'Ue')
    tempVar = tempVar.replace('ß', 'ss')
    
    return tempVar