"ius" = to use --> "ius-kin" = to use with

"mwahu" = to be good --> "mwahu-kin" = to be good at

"sa-" is an example of a verbal prefix.It is added to the beginning of a word and means ‘not.’

"pwung" = to be correct --> "sa-pwung" = to be incorrect

There are also directional suffixes that when added to the root word give the listener a better idea of where the subject is headed.