IN or UN
insensitive
apperance
disappearance
helpful
painter
impossible
able
unable
information
capability
capable
resist
resistant
legible
illegible
aware
obey
colour
colourful
disinfectant
legal
illegal
considerate
inconsiderate
qualified
misqualified-disqualified (the meaning is different)
understand
understandable
assist
assistant
moral
immoral
flexible
inflexible
lead
mislead
success
successful
law
lawyer
practical
impractical