I met a friend.
I saw a friend.
I met a friend.
I met a friend.
I met my friends yesterday.
I was meeting with my friends up until now.
I met your friend.
My friends came to see me the day before yesterday.
My friends visited me the day before yesterday.
I met your friend.
I met an old friend of mine the other day.
I met with my junior high friend the other day.
I met an old friend by chance.
I saw an old friend of mine.
I met an old friend of mine.