Common mistakes
The root begins with و. In the present it drops out entirely: وَصَلَ becomes يَصِلُ, and the imperative is simply صِلْ.
يَوْهَبُ → يَهَبُ Present: heأَوْهَبُ → أَهَبُ Present: Iيَوْهَبُونَ → يَهَبُونَ Present: they (m.)تَوْهَبِينَ → تَهَبِينَ Present: you (f.)