must acquire
Verbo regular: acquire - acquired- acquired

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must acquire
you must acquire
she must acquire
we must acquire
you must acquire
they must acquire 	I must be acquiring
you must be acquiring
she must be acquiring
we must be acquiring
you must be acquiring
they must be acquiring	I must have acquired
you must have acquired
she 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
she must have been acquiring
we must have been acquiring
you must have been acquiring
they must have been acquiring	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't acquire
you mustn't acquire
she mustn't acquire
we mustn't acquire
you mustn't acquire
they mustn't acquire 	I mustn't be acquiring
you mustn't be acquiring
she mustn't be acquiring
we mustn't be acquiring
you mustn't be acquiring
they mustn't be acquiring	I mustn't have acquired
you mustn't have acquired
she mustn't have acquired
we mustn't have acquired
you mustn't have acquired
they mustn't have acquired	I mustn't have been acquiring
you mustn't have been acquiring
she mustn't have been acquiring
we mustn't have been acquiring
you mustn't have been acquiring
they mustn't have been acquiring	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I acquire?
must you acquire?
must she acquire?
must we acquire?
must you acquire?
must they acquire? 	must I be acquiring?
must you be acquiring?
must she be acquiring?
must we be acquiring?
must you be acquiring?
must they be acquiring? 	must I have acquired?
must you have acquired?
must she 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 she have been acquiring?
must we have been acquiring?
must you have been acquiring?
must they have been acquiring? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I acquire?
mustn't you acquire?
mustn't she acquire?
mustn't we acquire?
mustn't you acquire?
mustn't they acquire? 	mustn't I be acquiring?
mustn't you be acquiring?
mustn't she be acquiring?
mustn't we be acquiring?
mustn't you be acquiring?
mustn't they be acquiring? 	mustn't I have acquired?
mustn't you have acquired?
mustn't she have acquired?
mustn't we have acquired?
mustn't you have acquired?
mustn't they have acquired? 	mustn't I have been acquiring?
mustn't you have been acquiring?
mustn't she have been acquiring?
mustn't we have been acquiring?
mustn't you have been acquiring?
mustn't they have been acquiring?