I may extemporize you may extemporize she may extemporize we may extemporize you may extemporize they may extemporize
V-ing form
I may be extemporizing you may be extemporizing she may be extemporizing we may be extemporizing you may be extemporizing they may be extemporizing
Perfect
I may have extemporized you may have extemporized she may have extemporized we may have extemporized you may have extemporized they may have extemporized
V-ing perfect
I may have been extemporizing you may have been extemporizing she may have been extemporizing we may have been extemporizing you may have been extemporizing they may have been extemporizing
Negation
Simple form
I mayn't extemporize you mayn't extemporize she mayn't extemporize we mayn't extemporize you mayn't extemporize they mayn't extemporize
V-ing form
I mayn't be extemporizing you mayn't be extemporizing she mayn't be extemporizing we mayn't be extemporizing you mayn't be extemporizing they mayn't be extemporizing
Perfect
I mayn't have extemporized you mayn't have extemporized she mayn't have extemporized we mayn't have extemporized you mayn't have extemporized they mayn't have extemporized
V-ing perfect
I mayn't have been extemporizing you mayn't have been extemporizing she mayn't have been extemporizing we mayn't have been extemporizing you mayn't have been extemporizing they mayn't have been extemporizing
Interrogative form
Simple form
may I extemporize? may you extemporize? may she extemporize? may we extemporize? may you extemporize? may they extemporize?
V-ing form
may I be extemporizing? may you be extemporizing? may she be extemporizing? may we be extemporizing? may you be extemporizing? may they be extemporizing?
Perfect
may I have extemporized? may you have extemporized? may she have extemporized? may we have extemporized? may you have extemporized? may they have extemporized?
V-ing perfect
may I have been extemporizing? may you have been extemporizing? may she have been extemporizing? may we have been extemporizing? may you have been extemporizing? may they have been extemporizing?
Interro-negative form
Simple form
mayn't I extemporize? mayn't you extemporize? mayn't she extemporize? mayn't we extemporize? mayn't you extemporize? mayn't they extemporize?
V-ing form
mayn't I be extemporizing? mayn't you be extemporizing? mayn't she be extemporizing? mayn't we be extemporizing? mayn't you be extemporizing? mayn't they be extemporizing?
Perfect
mayn't I have extemporized? mayn't you have extemporized? mayn't she have extemporized? mayn't we have extemporized? mayn't you have extemporized? mayn't they have extemporized?
V-ing perfect
mayn't I have been extemporizing? mayn't you have been extemporizing? mayn't she have been extemporizing? mayn't we have been extemporizing? mayn't you have been extemporizing? mayn't they have been extemporizing?