Directions:- Study the following information carefully to answer the question given below.
Six people - C, D, E, F, G and H - are standing in a straight line facing north not necessarily in the same order. D is standing second to the right of F. C is standing fourth to the left of H and H is not standing on the extreme end of the line. E is standing second to the right of D.
If all the people are asked to stand in a alphabetical order from left to right, the positions of how many will remain unchanged?