generate user interface that resembles to the google translator with "Nyakyusa langauge" and swahili language

def translate(phrase):
    translation = ""
    for letter in phrase:
        if letter.lower() in "bcdfghjklmnpqrstvwxyz":
            translation = translation + "o" + letter
        else:
            translation = translation + letter
    return translation

print(translate(input("Enter a phrase: ")))