Used to

I usually always tell the truth.

I used to always tell the truth.

I use to always tell the truth.

I didn't always use to tell the truth.

I read a different book every week.

I read a book last week.

I used to read a book every week.

None are correct.

I only did it one time.

It was a habit.

use to running

used to ran

used to run

use to ran

didn't use to

didn't used

don't used

Do you used to going

Did you used to go

Did you use to going

Did you use to go