You write 4 code numbers in hiragana to kanji. Each time the numbers is random.
いち: 1 .Kanji is 一
に: 2 .Kanji is 二
さん: 3 .Kanji is 三
よん or し: 4 .Kanji is 四
ご: 5 .Kanji is 五
ろく: 6 .Kanji is 六
なな or しち: 7 .Kanji is 七
はち: 8 .Kanji is 八
く or きゅう: 9 .Kanji is 九
Or you don't want answer this code you...