Lesson 13: ZU subscript 99 (2/8)
Click every "ZU subscript 99" sign below, then press submit or type 's'.
Click every "ZU subscript 99" sign, then press submit or type 's'.
Click every "ZU subscript 99" sign below, then press submit or type 's'.
Click every "ZU subscript 99" sign, then press submit or type 's'.