Common mistakes
The middle radical is و or ي. It stretches into a long vowel: قَالَ: and shortens before a consonant ending and in the jussive: قُلْتُ, لَمْ يَقُلْ.
قَوَلَ → قَالَ Past: heقَوَلَتْ → قَالَتْ Past: sheقَوَلْتَ → قُلْتَ Past: you (m.)قَوَلْتُ → قُلْتُ Past: I