difficult
more difficult
difficulter
tall
taller
tallier
thin
thiner
thinner
sad
sadder
more sad
big
bigger
more big
close
more close
closer
brave
more brave
braver
cute
cutier
cuter
free
freer
freeier
safe
safier
safer
hot
hotter
hottier
cool
more cool
cooler
warm
warmeir
warmer
dangerous
more dangerous
dangerouser
beautiful
more beautiful
beautifuler
comfortable
more comfortable
comfortabler
