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