I must designate you must designate he must designate we must designate you must designate they must designate
V-ing form
I must be designating you must be designating he must be designating we must be designating you must be designating they must be designating
Perfect
I must have designated you must have designated he must have designated we must have designated you must have designated they must have designated
V-ing perfect
I must have been designating you must have been designating he must have been designating we must have been designating you must have been designating they must have been designating
Negation
Simple form
I must not designate you must not designate he must not designate we must not designate you must not designate they must not designate
V-ing form
I must not be designating you must not be designating he must not be designating we must not be designating you must not be designating they must not be designating
Perfect
I must not have designated you must not have designated he must not have designated we must not have designated you must not have designated they must not have designated
V-ing perfect
I must not have been designating you must not have been designating he must not have been designating we must not have been designating you must not have been designating they must not have been designating
Interrogative form
Simple form
must I designate? must you designate? must he designate? must we designate? must you designate? must they designate?
V-ing form
must I be designating? must you be designating? must he be designating? must we be designating? must you be designating? must they be designating?
Perfect
must I have designated? must you have designated? must he have designated? must we have designated? must you have designated? must they have designated?
V-ing perfect
must I have been designating? must you have been designating? must he have been designating? must we have been designating? must you have been designating? must they have been designating?
Interro-negative form
Simple form
must I not designate? must you not designate? must he not designate? must we not designate? must you not designate? must they not designate?
V-ing form
must I not be designating? must you not be designating? must he not be designating? must we not be designating? must you not be designating? must they not be designating?
Perfect
must I not have designated? must you not have designated? must he not have designated? must we not have designated? must you not have designated? must they not have designated?
V-ing perfect
must I not have been designating? must you not have been designating? must he not have been designating? must we not have been designating? must you not have been designating? must they not have been designating?