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