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