I may concertize you may concertize he may concertize we may concertize you may concertize they may concertize
V-ing form
I may be concertizing you may be concertizing he may be concertizing we may be concertizing you may be concertizing they may be concertizing
Perfect
I may have concertized you may have concertized he may have concertized we may have concertized you may have concertized they may have concertized
V-ing perfect
I may have been concertizing you may have been concertizing he may have been concertizing we may have been concertizing you may have been concertizing they may have been concertizing
Negation
Simple form
I mayn't concertize you mayn't concertize he mayn't concertize we mayn't concertize you mayn't concertize they mayn't concertize
V-ing form
I mayn't be concertizing you mayn't be concertizing he mayn't be concertizing we mayn't be concertizing you mayn't be concertizing they mayn't be concertizing
Perfect
I mayn't have concertized you mayn't have concertized he mayn't have concertized we mayn't have concertized you mayn't have concertized they mayn't have concertized
V-ing perfect
I mayn't have been concertizing you mayn't have been concertizing he mayn't have been concertizing we mayn't have been concertizing you mayn't have been concertizing they mayn't have been concertizing
Interrogative form
Simple form
may I concertize? may you concertize? may he concertize? may we concertize? may you concertize? may they concertize?
V-ing form
may I be concertizing? may you be concertizing? may he be concertizing? may we be concertizing? may you be concertizing? may they be concertizing?
Perfect
may I have concertized? may you have concertized? may he have concertized? may we have concertized? may you have concertized? may they have concertized?
V-ing perfect
may I have been concertizing? may you have been concertizing? may he have been concertizing? may we have been concertizing? may you have been concertizing? may they have been concertizing?
Interro-negative form
Simple form
mayn't I concertize? mayn't you concertize? mayn't he concertize? mayn't we concertize? mayn't you concertize? mayn't they concertize?
V-ing form
mayn't I be concertizing? mayn't you be concertizing? mayn't he be concertizing? mayn't we be concertizing? mayn't you be concertizing? mayn't they be concertizing?
Perfect
mayn't I have concertized? mayn't you have concertized? mayn't he have concertized? mayn't we have concertized? mayn't you have concertized? mayn't they have concertized?
V-ing perfect
mayn't I have been concertizing? mayn't you have been concertizing? mayn't he have been concertizing? mayn't we have been concertizing? mayn't you have been concertizing? mayn't they have been concertizing?