I may presterilise you may presterilise she may presterilise we may presterilise you may presterilise they may presterilise
V-ing form
I may be presterilising you may be presterilising she may be presterilising we may be presterilising you may be presterilising they may be presterilising
Perfect
I may have presterilised you may have presterilised she may have presterilised we may have presterilised you may have presterilised they may have presterilised
V-ing perfect
I may have been presterilising you may have been presterilising she may have been presterilising we may have been presterilising you may have been presterilising they may have been presterilising
Negation
Simple form
I may not presterilise you may not presterilise she may not presterilise we may not presterilise you may not presterilise they may not presterilise
V-ing form
I may not be presterilising you may not be presterilising she may not be presterilising we may not be presterilising you may not be presterilising they may not be presterilising
Perfect
I may not have presterilised you may not have presterilised she may not have presterilised we may not have presterilised you may not have presterilised they may not have presterilised
V-ing perfect
I may not have been presterilising you may not have been presterilising she may not have been presterilising we may not have been presterilising you may not have been presterilising they may not have been presterilising
Interrogative form
Simple form
may I presterilise? may you presterilise? may she presterilise? may we presterilise? may you presterilise? may they presterilise?
V-ing form
may I be presterilising? may you be presterilising? may she be presterilising? may we be presterilising? may you be presterilising? may they be presterilising?
Perfect
may I have presterilised? may you have presterilised? may she have presterilised? may we have presterilised? may you have presterilised? may they have presterilised?
V-ing perfect
may I have been presterilising? may you have been presterilising? may she have been presterilising? may we have been presterilising? may you have been presterilising? may they have been presterilising?
Interro-negative form
Simple form
may I not presterilise? may you not presterilise? may she not presterilise? may we not presterilise? may you not presterilise? may they not presterilise?
V-ing form
may I not be presterilising? may you not be presterilising? may she not be presterilising? may we not be presterilising? may you not be presterilising? may they not be presterilising?
Perfect
may I not have presterilised? may you not have presterilised? may she not have presterilised? may we not have presterilised? may you not have presterilised? may they not have presterilised?
V-ing perfect
may I not have been presterilising? may you not have been presterilising? may she not have been presterilising? may we not have been presterilising? may you not have been presterilising? may they not have been presterilising?