Root ل ح ق(l H q) has 4 unique word forms and appears 6 times in the Quran.

English gloss Catch up, keep close, Overtake, Following, Added, Attached, Dependency, Accompany, Adjacent

Word Translation Occurrences
وَأَلۡحِقۡنِي and join me, and join me 4
يَلۡحَقُواْ joined, joined, yet joined, yet joined 4
أَلۡحَقۡتُم you have joined, you have joined 2
أَلۡحَقۡنَا We will join, We will join 2