richer, richest
rich, richer
fast, faster
faster, fastest
loud
loudest
older, oldest
old, oldest
funny
funniest
short, shorter
shorter, shortest
sadder
saddest
tall, taller
taller, tallest
saddest
sadder
strong, strongest
stronger, strongest
shorter
short
...
heavier
heavy
bigger, biggest
big, bigger
hot, hotter
hotter, hottest