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