function toLanguage(text)
    return text:gsub(".", function(pattern)
        return (("aeiou"):match(pattern:lower()) or pattern:lower():byte() < 96) and pattern or pattern .. "op"
    end)
end

function toEnglish(text)
    return text:gsub("(.)op", "%1")
end

local translate = toLanguage("I am a cool kid!!!")
local english = toEnglish(translate)

print(("English: %s\nTranslated: %s"):format(english, translate))