Образуйте сравнительную и превосходную степени прилагательных. difficult, high, far, interesting, long, many ?

difficult - more difficult- the most difficult
high -higher-the highest 
far - farther- the farthest
 interesting - more interesing- the most interesting
 long- longer- the longest
many - more-the most

More difficult the most difficult
higher the highest
farther  the farthest
more interesting the most interesting
longer the longest
more the most