big-...........................................
bigger
pretty-...........................................
prettier
colourful-...........................................
more colourful
dangerous-...........................................
more dangerous
big-...........................................
bigger
intelligent-...........................................
more intelligent
ugly-...........................................
uglier
small-...........................................
smaller
heavy-...........................................
heavier
fast-...........................................
faster
long-...........................................
longer
slow-...........................................
slower
tall-...........................................
taller