I may concretise you may concretise he may concretise we may concretise you may concretise they may concretise
V-ing form
I may be concretising you may be concretising he may be concretising we may be concretising you may be concretising they may be concretising
Perfect
I may have concretised you may have concretised he may have concretised we may have concretised you may have concretised they may have concretised
V-ing perfect
I may have been concretising you may have been concretising he may have been concretising we may have been concretising you may have been concretising they may have been concretising
Negation
Simple form
I may not concretise you may not concretise he may not concretise we may not concretise you may not concretise they may not concretise
V-ing form
I may not be concretising you may not be concretising he may not be concretising we may not be concretising you may not be concretising they may not be concretising
Perfect
I may not have concretised you may not have concretised he may not have concretised we may not have concretised you may not have concretised they may not have concretised
V-ing perfect
I may not have been concretising you may not have been concretising he may not have been concretising we may not have been concretising you may not have been concretising they may not have been concretising
Interrogative form
Simple form
may I concretise? may you concretise? may he concretise? may we concretise? may you concretise? may they concretise?
V-ing form
may I be concretising? may you be concretising? may he be concretising? may we be concretising? may you be concretising? may they be concretising?
Perfect
may I have concretised? may you have concretised? may he have concretised? may we have concretised? may you have concretised? may they have concretised?
V-ing perfect
may I have been concretising? may you have been concretising? may he have been concretising? may we have been concretising? may you have been concretising? may they have been concretising?
Interro-negative form
Simple form
may I not concretise? may you not concretise? may he not concretise? may we not concretise? may you not concretise? may they not concretise?
V-ing form
may I not be concretising? may you not be concretising? may he not be concretising? may we not be concretising? may you not be concretising? may they not be concretising?
Perfect
may I not have concretised? may you not have concretised? may he not have concretised? may we not have concretised? may you not have concretised? may they not have concretised?
V-ing perfect
may I not have been concretising? may you not have been concretising? may he not have been concretising? may we not have been concretising? may you not have been concretising? may they not have been concretising?