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