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