Common mistakes
The root ends in و or ي, and the endings themselves change. Three patterns cover it: دَعَا يَدْعُو, رَمَى يَرْمِي and نَسِيَ يَنْسَى.
بَقِيُوا → بَقُوا Past: they (m.)يَبْقَيُ → يَبْقَى Present: heأَبْقَيُ → أَبْقَى Present: Iيَبْقَيُونَ → يَبْقَوْنَ Present: they (m.)