I must pounce you must pounce he must pounce we must pounce you must pounce they must pounce
V-ing form
I must be pouncing you must be pouncing he must be pouncing we must be pouncing you must be pouncing they must be pouncing
Perfect
I must have pounced you must have pounced he must have pounced we must have pounced you must have pounced they must have pounced
V-ing perfect
I must have been pouncing you must have been pouncing he must have been pouncing we must have been pouncing you must have been pouncing they must have been pouncing
Negation
Simple form
I must not pounce you must not pounce he must not pounce we must not pounce you must not pounce they must not pounce
V-ing form
I must not be pouncing you must not be pouncing he must not be pouncing we must not be pouncing you must not be pouncing they must not be pouncing
Perfect
I must not have pounced you must not have pounced he must not have pounced we must not have pounced you must not have pounced they must not have pounced
V-ing perfect
I must not have been pouncing you must not have been pouncing he must not have been pouncing we must not have been pouncing you must not have been pouncing they must not have been pouncing
Interrogative form
Simple form
must I pounce? must you pounce? must he pounce? must we pounce? must you pounce? must they pounce?
V-ing form
must I be pouncing? must you be pouncing? must he be pouncing? must we be pouncing? must you be pouncing? must they be pouncing?
Perfect
must I have pounced? must you have pounced? must he have pounced? must we have pounced? must you have pounced? must they have pounced?
V-ing perfect
must I have been pouncing? must you have been pouncing? must he have been pouncing? must we have been pouncing? must you have been pouncing? must they have been pouncing?
Interro-negative form
Simple form
must I not pounce? must you not pounce? must he not pounce? must we not pounce? must you not pounce? must they not pounce?
V-ing form
must I not be pouncing? must you not be pouncing? must he not be pouncing? must we not be pouncing? must you not be pouncing? must they not be pouncing?
Perfect
must I not have pounced? must you not have pounced? must he not have pounced? must we not have pounced? must you not have pounced? must they not have pounced?
V-ing perfect
must I not have been pouncing? must you not have been pouncing? must he not have been pouncing? must we not have been pouncing? must you not have been pouncing? must they not have been pouncing?