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.
أَلْقَيَ → أَلْقَى Past: heأَلْقَيَتْ → أَلْقَتْ Past: sheأَلْقَيُوا → أَلْقَوْا Past: they (m.)يُلْقِيُ → يُلْقِي Present: he