import java.util.Random

object JappoApp extends App {
    val random = new Random(System.currentTimeMillis())
    val hiragana = Map(
        "あ" -> "a",
        "い" -> "i",
        "う" -> "u",
        "え" -> "e",
        "お" -> "o",
        "か" -> "ka",
        "き" -> "ki",
        "く" -> "ku",
        "け" -> "ke",
        "こ" -> "ko",
        "さ" -> "sa",
        "し" -> "shi",
        "す" -> "su",
        "せ" -> "se",
        "そ" -> "so"
    )

    def f(): Int = {
        val q = hiragana.keySet.toArray
        val k = q(random.nextInt(q.length))
        println(k)
        val s = readLine()

        if (s == hiragana(k)) println("OK")
        else if (s == ".") return 0
        else println("Wrong")

        return f()
    }

    f()
}