Root ب ك ي(b k y) has 6 unique word forms and appears 7 times in the Quran.

Word Translation Occurrences
يَبۡكُونَ weeping, weeping 4
بَكَتۡ wept, wept 2
تَبۡكُونَ weep, weep 2
وَأَبۡكَىٰ and makes (one) weep, and makes (one) weep 2
وَبُكِيّٗا ۩ and weeping, and weeping 2
وَلۡيَبۡكُواْ and let them weep, and let them weep 2