1. if, in case, if it is the case that, if it is true that
2. as for, on the topic of
3. if that's the case, if so, that being the case
4. if possible, if circumstances allow
1. to work, to labor, to labour
2. to function, to operate, to be effective, to work (i.e. ... works), to come into play
3. to commit (e.g. a crime), to perpetrate, to do, to act, to practise, to practice
4. to be conjugated
