Stem يُطَهِّرَ has 3 unique word forms and appears 4 times in the Quran.

Word Translation Occurrences
لِيُطَهِّرَكُمۡ to purify you 2
لِّيُطَهِّرَكُم so that He may purify you 2
وَيُطَهِّرَكُمۡ And to purify you 2
يُطَهِّرَ He purifies 2