So for example, Arabic: "kataba," he wrote, "yaktubu," he writes, she writes. "Uktub," write, in the imperative. What do those things have in common?
Así, por ejemplo, en árabe: "kataba" él escribió, "Yaktubu", él escribe, ella escribe. "Uktub," escribir, en el imperativo. ¿Qué tienen esas cosas tienen en común?