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