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