Root ل م س(l m s) has 4 unique word forms and appears 5 times in the Quran.

Word Translation Occurrences
لَٰمَسۡتُمُ has (had) contact, has (had) contact, you have touched, you have touched 4
فَٱلۡتَمِسُواْ and seek, and seek 2
فَلَمَسُوهُ and they touched it, and they touched it 2
لَمَسۡنَا sought to touch, sought to touch 2