must compress
Verbo regular: compress - compressed- compressed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must compress
you must compress
he must compress
we must compress
you must compress
they must compress 	I must be compressing
you must be compressing
he must be compressing
we must be compressing
you must be compressing
they must be compressing	I must have compressed
you must have compressed
he must have compressed
we must have compressed
you must have compressed
they must have compressed	I must have been compressing
you must have been compressing
he must have been compressing
we must have been compressing
you must have been compressing
they must have been compressing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't compress
you mustn't compress
he mustn't compress
we mustn't compress
you mustn't compress
they mustn't compress 	I mustn't be compressing
you mustn't be compressing
he mustn't be compressing
we mustn't be compressing
you mustn't be compressing
they mustn't be compressing	I mustn't have compressed
you mustn't have compressed
he mustn't have compressed
we mustn't have compressed
you mustn't have compressed
they mustn't have compressed	I mustn't have been compressing
you mustn't have been compressing
he mustn't have been compressing
we mustn't have been compressing
you mustn't have been compressing
they mustn't have been compressing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I compress?
must you compress?
must he compress?
must we compress?
must you compress?
must they compress? 	must I be compressing?
must you be compressing?
must he be compressing?
must we be compressing?
must you be compressing?
must they be compressing? 	must I have compressed?
must you have compressed?
must he have compressed?
must we have compressed?
must you have compressed?
must they have compressed? 	must I have been compressing?
must you have been compressing?
must he have been compressing?
must we have been compressing?
must you have been compressing?
must they have been compressing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I compress?
mustn't you compress?
mustn't he compress?
mustn't we compress?
mustn't you compress?
mustn't they compress? 	mustn't I be compressing?
mustn't you be compressing?
mustn't he be compressing?
mustn't we be compressing?
mustn't you be compressing?
mustn't they be compressing? 	mustn't I have compressed?
mustn't you have compressed?
mustn't he have compressed?
mustn't we have compressed?
mustn't you have compressed?
mustn't they have compressed? 	mustn't I have been compressing?
mustn't you have been compressing?
mustn't he have been compressing?
mustn't we have been compressing?
mustn't you have been compressing?
mustn't they have been compressing?