clean
cleaner - the cleanest
new
newer - the newest
cheap
cheaper - the cheapest
dirty
dirtier - the dirtiest
happy
happier - the happiest
pretty
prettier - the prettiest
clever
cleverer - the cleverest
difficult
more difficult - the most difficult
bad
worse - the worst
many
more - the most
good
better - the best
little
less - the least
shy
shyer - the shyest
narrow
narrower - the narrowest
big
bigger - the biggest
high
higher - the highest
