Simplify the following text for a Grade 9 native English-speaking person.
Original: Between January 4 , 2006 and September 19 , 2006 , five DVD sets were released in the United States , each containing four episodes from the season .
Simplified: Between 4 January 2006 and 19 September 2006 , five DVD sets were released in the USA , each had four episodes from the season .