Where Do They Sit

Where Do They Sit
Six children go to the cinema to see the film.They sit in the same row.
Their seats numbers are 1A,1B,1C,1D,1E and 1F.Mingming doesn't sits next to john.He sits next to Sue.Helen sits between sam and john.sam sits in 1A.Mary sits on the left of Mingming.Which seats do they sit in?