I must wolf you must wolf he must wolf we must wolf you must wolf they must wolf
V-ing form
I must be wolfing you must be wolfing he must be wolfing we must be wolfing you must be wolfing they must be wolfing
Perfect
I must have wolfed you must have wolfed he must have wolfed we must have wolfed you must have wolfed they must have wolfed
V-ing perfect
I must have been wolfing you must have been wolfing he must have been wolfing we must have been wolfing you must have been wolfing they must have been wolfing
Negation
Simple form
I must not wolf you must not wolf he must not wolf we must not wolf you must not wolf they must not wolf
V-ing form
I must not be wolfing you must not be wolfing he must not be wolfing we must not be wolfing you must not be wolfing they must not be wolfing
Perfect
I must not have wolfed you must not have wolfed he must not have wolfed we must not have wolfed you must not have wolfed they must not have wolfed
V-ing perfect
I must not have been wolfing you must not have been wolfing he must not have been wolfing we must not have been wolfing you must not have been wolfing they must not have been wolfing
Interrogative form
Simple form
must I wolf? must you wolf? must he wolf? must we wolf? must you wolf? must they wolf?
V-ing form
must I be wolfing? must you be wolfing? must he be wolfing? must we be wolfing? must you be wolfing? must they be wolfing?
Perfect
must I have wolfed? must you have wolfed? must he have wolfed? must we have wolfed? must you have wolfed? must they have wolfed?
V-ing perfect
must I have been wolfing? must you have been wolfing? must he have been wolfing? must we have been wolfing? must you have been wolfing? must they have been wolfing?
Interro-negative form
Simple form
must I not wolf? must you not wolf? must he not wolf? must we not wolf? must you not wolf? must they not wolf?
V-ing form
must I not be wolfing? must you not be wolfing? must he not be wolfing? must we not be wolfing? must you not be wolfing? must they not be wolfing?
Perfect
must I not have wolfed? must you not have wolfed? must he not have wolfed? must we not have wolfed? must you not have wolfed? must they not have wolfed?
V-ing perfect
must I not have been wolfing? must you not have been wolfing? must he not have been wolfing? must we not have been wolfing? must you not have been wolfing? must they not have been wolfing?