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