Stem اسْتَغْفِرُ has 4 unique word forms and appears 8 times in the Quran.

Word Translation Occurrences
ٱسۡتَغۡفِرُواْ Ask forgiveness, Seek forgiveness 6
وَٱسۡتَغۡفِرُواْ and ask forgiveness, And seek forgiveness 6
فَٱسۡتَغۡفِرُوهُ So ask forgiveness of Him 2
وَٱسۡتَغۡفِرُوهُۗ and ask His forgiveness 2