fast
faster - the fastest
nice
nicer - the nicest
big
bigger - biggest
short
shorter - the shortest
healthy
healthier - the healthiest
young
younger - the youngest
quiet
quieter - the quietest
hot
hotter - the hottest
friendly
friendlier - the friendliest
ugly
uglier - the ugliest
easy
easier - easiest
clean
cleaner - the cleanest
big
bigger - the biggest