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