Lesson 12: SI subscript 2222 (2/8)
Click every "SI subscript 2222" sign below, then press submit or type 's'.
Click every "SI subscript 2222" sign, then press submit or type 's'.
Click every "SI subscript 2222" sign below, then press submit or type 's'.
Click every "SI subscript 2222" sign, then press submit or type 's'.