I may strain you may strain he may strain we may strain you may strain they may strain
V-ing form
I may be straining you may be straining he may be straining we may be straining you may be straining they may be straining
Perfect
I may have strained you may have strained he 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 he 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 he 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 he 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 he 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 he 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 he strain? may we strain? may you strain? may they strain?
V-ing form
may I be straining? may you be straining? may he be straining? may we be straining? may you be straining? may they be straining?
Perfect
may I have strained? may you have strained? may he 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 he 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 he 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 he 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 he 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 he have been straining? mayn't we have been straining? mayn't you have been straining? mayn't they have been straining?