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.
بَدَوَ → بَدَا Past: heبَدَوَتْ → بَدَتْ Past: sheبَدَوُوا → بَدَوْا Past: they (m.)يَبْدُوُ → يَبْدُو Present: he