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