I may prefertilise you may prefertilise he may prefertilise we may prefertilise you may prefertilise they may prefertilise
V-ing form
I may be prefertilising you may be prefertilising he may be prefertilising we may be prefertilising you may be prefertilising they may be prefertilising
Perfect
I may have prefertilised you may have prefertilised he may have prefertilised we may have prefertilised you may have prefertilised they may have prefertilised
V-ing perfect
I may have been prefertilising you may have been prefertilising he may have been prefertilising we may have been prefertilising you may have been prefertilising they may have been prefertilising
Negation
Simple form
I may not prefertilise you may not prefertilise he may not prefertilise we may not prefertilise you may not prefertilise they may not prefertilise
V-ing form
I may not be prefertilising you may not be prefertilising he may not be prefertilising we may not be prefertilising you may not be prefertilising they may not be prefertilising
Perfect
I may not have prefertilised you may not have prefertilised he may not have prefertilised we may not have prefertilised you may not have prefertilised they may not have prefertilised
V-ing perfect
I may not have been prefertilising you may not have been prefertilising he may not have been prefertilising we may not have been prefertilising you may not have been prefertilising they may not have been prefertilising
Interrogative form
Simple form
may I prefertilise? may you prefertilise? may he prefertilise? may we prefertilise? may you prefertilise? may they prefertilise?
V-ing form
may I be prefertilising? may you be prefertilising? may he be prefertilising? may we be prefertilising? may you be prefertilising? may they be prefertilising?
Perfect
may I have prefertilised? may you have prefertilised? may he have prefertilised? may we have prefertilised? may you have prefertilised? may they have prefertilised?
V-ing perfect
may I have been prefertilising? may you have been prefertilising? may he have been prefertilising? may we have been prefertilising? may you have been prefertilising? may they have been prefertilising?
Interro-negative form
Simple form
may I not prefertilise? may you not prefertilise? may he not prefertilise? may we not prefertilise? may you not prefertilise? may they not prefertilise?
V-ing form
may I not be prefertilising? may you not be prefertilising? may he not be prefertilising? may we not be prefertilising? may you not be prefertilising? may they not be prefertilising?
Perfect
may I not have prefertilised? may you not have prefertilised? may he not have prefertilised? may we not have prefertilised? may you not have prefertilised? may they not have prefertilised?
V-ing perfect
may I not have been prefertilising? may you not have been prefertilising? may he not have been prefertilising? may we not have been prefertilising? may you not have been prefertilising? may they not have been prefertilising?