I must tense you must tense he must tense we must tense you must tense they must tense
V-ing form
I must be tensing you must be tensing he must be tensing we must be tensing you must be tensing they must be tensing
Perfect
I must have tensed you must have tensed he must have tensed we must have tensed you must have tensed they must have tensed
V-ing perfect
I must have been tensing you must have been tensing he must have been tensing we must have been tensing you must have been tensing they must have been tensing
Negation
Simple form
I must not tense you must not tense he must not tense we must not tense you must not tense they must not tense
V-ing form
I must not be tensing you must not be tensing he must not be tensing we must not be tensing you must not be tensing they must not be tensing
Perfect
I must not have tensed you must not have tensed he must not have tensed we must not have tensed you must not have tensed they must not have tensed
V-ing perfect
I must not have been tensing you must not have been tensing he must not have been tensing we must not have been tensing you must not have been tensing they must not have been tensing
Interrogative form
Simple form
must I tense? must you tense? must he tense? must we tense? must you tense? must they tense?
V-ing form
must I be tensing? must you be tensing? must he be tensing? must we be tensing? must you be tensing? must they be tensing?
Perfect
must I have tensed? must you have tensed? must he have tensed? must we have tensed? must you have tensed? must they have tensed?
V-ing perfect
must I have been tensing? must you have been tensing? must he have been tensing? must we have been tensing? must you have been tensing? must they have been tensing?
Interro-negative form
Simple form
must I not tense? must you not tense? must he not tense? must we not tense? must you not tense? must they not tense?
V-ing form
must I not be tensing? must you not be tensing? must he not be tensing? must we not be tensing? must you not be tensing? must they not be tensing?
Perfect
must I not have tensed? must you not have tensed? must he not have tensed? must we not have tensed? must you not have tensed? must they not have tensed?
V-ing perfect
must I not have been tensing? must you not have been tensing? must he not have been tensing? must we not have been tensing? must you not have been tensing? must they not have been tensing?