Wiktionary
A fish can swim.
Source: Tatoeba
Understand?
You could run.
A bird can fly.
I'm able to speak.
May I?
I could kill you.
I can help out.
Can you come?
He is capable of robbery.
Can you see?
She understands.
He understands.
I could see that.
Can you walk?
I can help you out.
You can see it clearly, right?
Can you see it clearly?
Understand me.
I can come, too.
I understand!