Examples A motion proceeding in different directions. . Turtles are swimming in aquarium. Completed trips in the past tense. A repeated action. . Ability or skill to perform an action. .
Horses run fast.
A plane flies to Paris. The bells were ringing when we were walking to the church. Such verbs, when used in the past tense, may denote a movement in two directions. Such verbs invariably denote movement only in one direction. Katya swam in the sea for a bit and went to a cafe.