م ح ك are the root letters of the word يَحْكُمُ

The root letters of مَّنَعَ are م ن ع

The root letters of مَسَـجِدَ are س ج د

ي ق ن are the root letters of the word يُوقِنُونَ

ش ب ه are the root letters of the word تَشَـبَهَتْ

ر ض ى the root letters of the word تَرْضَى

ه و ء are the root letters of the word أَهْوَاء