I must damage you must damage he must damage we must damage you must damage they must damage
V-ing form
I must be damaging you must be damaging he must be damaging we must be damaging you must be damaging they must be damaging
Perfect
I must have damaged you must have damaged he must have damaged we must have damaged you must have damaged they must have damaged
V-ing perfect
I must have been damaging you must have been damaging he must have been damaging we must have been damaging you must have been damaging they must have been damaging
Negation
Simple form
I must not damage you must not damage he must not damage we must not damage you must not damage they must not damage
V-ing form
I must not be damaging you must not be damaging he must not be damaging we must not be damaging you must not be damaging they must not be damaging
Perfect
I must not have damaged you must not have damaged he must not have damaged we must not have damaged you must not have damaged they must not have damaged
V-ing perfect
I must not have been damaging you must not have been damaging he must not have been damaging we must not have been damaging you must not have been damaging they must not have been damaging
Interrogative form
Simple form
must I damage? must you damage? must he damage? must we damage? must you damage? must they damage?
V-ing form
must I be damaging? must you be damaging? must he be damaging? must we be damaging? must you be damaging? must they be damaging?
Perfect
must I have damaged? must you have damaged? must he have damaged? must we have damaged? must you have damaged? must they have damaged?
V-ing perfect
must I have been damaging? must you have been damaging? must he have been damaging? must we have been damaging? must you have been damaging? must they have been damaging?
Interro-negative form
Simple form
must I not damage? must you not damage? must he not damage? must we not damage? must you not damage? must they not damage?
V-ing form
must I not be damaging? must you not be damaging? must he not be damaging? must we not be damaging? must you not be damaging? must they not be damaging?
Perfect
must I not have damaged? must you not have damaged? must he not have damaged? must we not have damaged? must you not have damaged? must they not have damaged?
V-ing perfect
must I not have been damaging? must you not have been damaging? must he not have been damaging? must we not have been damaging? must you not have been damaging? must they not have been damaging?