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