( un / dis / mis )_____appointed
disappointed
( sub / un / in ) ________forgettable
unforgettable
( un/ dis / re )___comfortable
uncomfortable
( re / non / sub ) _____heat
reheat
( inter / under / super ) ______national
international
( mis / pre / non )______understand
misunderstand
( un / de / ir )______friendly
unfriendly
( ir / in / im ) _____formal
informal
(pre / non / anti )_____-task
pre-task
( im / in / ir )______patient
impatient
