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