This was given to a guitar student to introduce the rhythm pattern of strumming a dotted 8th note followed by a 16th note. Beats 1 and 3 contain four 16th notes in order to help you lock into the appropriate strumming speed/rhythm. This is done to help make transitioning to the dotted 8th note +16th note easier to play and understand.
Here is the Guitar Pro 6 tab for this lesson:
John Taylor - guitar and bass instructor for Mile High Shred.