must acquire
Regular verb: acquire - acquired- acquired

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must acquire
you must acquire
he must acquire
we must acquire
you must acquire
they must acquire 	I must be acquiring
you must be acquiring
he must be acquiring
we must be acquiring
you must be acquiring
they must be acquiring	I must have acquired
you must have acquired
he must have acquired
we must have acquired
you must have acquired
they must have acquired	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 	V-ing form 	Perfect 	V-ing perfect 	
I must not acquire
you must not acquire
he must not acquire
we must not acquire
you must not acquire
they must not acquire 	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	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	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 	V-ing form 	Perfect 	V-ing perfect 	
must I acquire?
must you acquire?
must he acquire?
must we acquire?
must you acquire?
must they acquire? 	must I be acquiring?
must you be acquiring?
must he be acquiring?
must we be acquiring?
must you be acquiring?
must they be acquiring? 	must I have acquired?
must you have acquired?
must he have acquired?
must we have acquired?
must you have acquired?
must they have acquired? 	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 	V-ing form 	Perfect 	V-ing perfect 	
must I not acquire?
must you not acquire?
must he not acquire?
must we not acquire?
must you not acquire?
must they not acquire? 	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? 	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? 	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?