I may obstruct you may obstruct he may obstruct we may obstruct you may obstruct they may obstruct
V-ing form
I may be obstructing you may be obstructing he may be obstructing we may be obstructing you may be obstructing they may be obstructing
Perfect
I may have obstructed you may have obstructed he may have obstructed we may have obstructed you may have obstructed they may have obstructed
V-ing perfect
I may have been obstructing you may have been obstructing he may have been obstructing we may have been obstructing you may have been obstructing they may have been obstructing
Negation
Simple form
I may not obstruct you may not obstruct he may not obstruct we may not obstruct you may not obstruct they may not obstruct
V-ing form
I may not be obstructing you may not be obstructing he may not be obstructing we may not be obstructing you may not be obstructing they may not be obstructing
Perfect
I may not have obstructed you may not have obstructed he may not have obstructed we may not have obstructed you may not have obstructed they may not have obstructed
V-ing perfect
I may not have been obstructing you may not have been obstructing he may not have been obstructing we may not have been obstructing you may not have been obstructing they may not have been obstructing
Interrogative form
Simple form
may I obstruct? may you obstruct? may he obstruct? may we obstruct? may you obstruct? may they obstruct?
V-ing form
may I be obstructing? may you be obstructing? may he be obstructing? may we be obstructing? may you be obstructing? may they be obstructing?
Perfect
may I have obstructed? may you have obstructed? may he have obstructed? may we have obstructed? may you have obstructed? may they have obstructed?
V-ing perfect
may I have been obstructing? may you have been obstructing? may he have been obstructing? may we have been obstructing? may you have been obstructing? may they have been obstructing?
Interro-negative form
Simple form
may I not obstruct? may you not obstruct? may he not obstruct? may we not obstruct? may you not obstruct? may they not obstruct?
V-ing form
may I not be obstructing? may you not be obstructing? may he not be obstructing? may we not be obstructing? may you not be obstructing? may they not be obstructing?
Perfect
may I not have obstructed? may you not have obstructed? may he not have obstructed? may we not have obstructed? may you not have obstructed? may they not have obstructed?
V-ing perfect
may I not have been obstructing? may you not have been obstructing? may he not have been obstructing? may we not have been obstructing? may you not have been obstructing? may they not have been obstructing?