He studied on his own account.

He found out the answers for himself.

He finished the work for himself.

He did the work on his own.

Child as he was, he made up his mind to do the work for himself.

He finished this work for himself.

He did the work on his own.

If you can do it on your own, do it without reserve.

Can you solve the problem by yourself?

No man can live by and for himself.

As a matter of fact, he did it by himself.

I'm going to work out the problem by myself.

I finished the work by myself.

My father told me to do so on my own.

You must think by yourselves.

Did you make it for yourself?