I must acquire you must acquire he must acquire we must acquire you must acquire they must acquire
V-ing form
I must be acquiring you must be acquiring he must be acquiring we must be acquiring you must be acquiring they must be acquiring
Perfect
I must have acquired you must have acquired he must have acquired we must have acquired you must have acquired they must have acquired
V-ing perfect
I must have been acquiring you must have been acquiring he must have been acquiring we must have been acquiring you must have been acquiring they must have been acquiring
Negation
Simple form
I must not acquire you must not acquire he must not acquire we must not acquire you must not acquire they must not acquire
V-ing form
I must not be acquiring you must not be acquiring he must not be acquiring we must not be acquiring you must not be acquiring they must not be acquiring
Perfect
I must not have acquired you must not have acquired he must not have acquired we must not have acquired you must not have acquired they must not have acquired
V-ing perfect
I must not have been acquiring you must not have been acquiring he must not have been acquiring we must not have been acquiring you must not have been acquiring they must not have been acquiring
Interrogative form
Simple form
must I acquire? must you acquire? must he acquire? must we acquire? must you acquire? must they acquire?
V-ing form
must I be acquiring? must you be acquiring? must he be acquiring? must we be acquiring? must you be acquiring? must they be acquiring?
Perfect
must I have acquired? must you have acquired? must he have acquired? must we have acquired? must you have acquired? must they have acquired?
V-ing perfect
must I have been acquiring? must you have been acquiring? must he have been acquiring? must we have been acquiring? must you have been acquiring? must they have been acquiring?
Interro-negative form
Simple form
must I not acquire? must you not acquire? must he not acquire? must we not acquire? must you not acquire? must they not acquire?
V-ing form
must I not be acquiring? must you not be acquiring? must he not be acquiring? must we not be acquiring? must you not be acquiring? must they not be acquiring?
Perfect
must I not have acquired? must you not have acquired? must he not have acquired? must we not have acquired? must you not have acquired? must they not have acquired?
V-ing perfect
must I not have been acquiring? must you not have been acquiring? must he not have been acquiring? must we not have been acquiring? must you not have been acquiring? must they not have been acquiring?