Root ش ك و($ k w) has 3 unique word forms and appears 3 times in the Quran.

Word Translation Occurrences
أَشۡكُواْ I complain, I complain 2
كَمِشۡكَوٰةٖ (is) like a niche, (is) like a niche 2
وَتَشۡتَكِيٓ and she directs her complaint, and she directs her complaint 2