I may contend you may contend he may contend we may contend you may contend they may contend
V-ing form
I may be contending you may be contending he may be contending we may be contending you may be contending they may be contending
Perfect
I may have contended you may have contended he may have contended we may have contended you may have contended they may have contended
V-ing perfect
I may have been contending you may have been contending he may have been contending we may have been contending you may have been contending they may have been contending
Negation
Simple form
I may not contend you may not contend he may not contend we may not contend you may not contend they may not contend
V-ing form
I may not be contending you may not be contending he may not be contending we may not be contending you may not be contending they may not be contending
Perfect
I may not have contended you may not have contended he may not have contended we may not have contended you may not have contended they may not have contended
V-ing perfect
I may not have been contending you may not have been contending he may not have been contending we may not have been contending you may not have been contending they may not have been contending
Interrogative form
Simple form
may I contend? may you contend? may he contend? may we contend? may you contend? may they contend?
V-ing form
may I be contending? may you be contending? may he be contending? may we be contending? may you be contending? may they be contending?
Perfect
may I have contended? may you have contended? may he have contended? may we have contended? may you have contended? may they have contended?
V-ing perfect
may I have been contending? may you have been contending? may he have been contending? may we have been contending? may you have been contending? may they have been contending?
Interro-negative form
Simple form
may I not contend? may you not contend? may he not contend? may we not contend? may you not contend? may they not contend?
V-ing form
may I not be contending? may you not be contending? may he not be contending? may we not be contending? may you not be contending? may they not be contending?
Perfect
may I not have contended? may you not have contended? may he not have contended? may we not have contended? may you not have contended? may they not have contended?
V-ing perfect
may I not have been contending? may you not have been contending? may he not have been contending? may we not have been contending? may you not have been contending? may they not have been contending?