must precompress
Verbo regular: precompress - precompressed- precompressed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must precompress
you must precompress
he must precompress
we must precompress
you must precompress
they must precompress 	I must be precompressing
you must be precompressing
he must be precompressing
we must be precompressing
you must be precompressing
they must be precompressing	I must have precompressed
you must have precompressed
he must have precompressed
we must have precompressed
you must have precompressed
they must have precompressed	I must have been precompressing
you must have been precompressing
he must have been precompressing
we must have been precompressing
you must have been precompressing
they must have been precompressing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not precompress
you must not precompress
he must not precompress
we must not precompress
you must not precompress
they must not precompress 	I must not be precompressing
you must not be precompressing
he must not be precompressing
we must not be precompressing
you must not be precompressing
they must not be precompressing	I must not have precompressed
you must not have precompressed
he must not have precompressed
we must not have precompressed
you must not have precompressed
they must not have precompressed	I must not have been precompressing
you must not have been precompressing
he must not have been precompressing
we must not have been precompressing
you must not have been precompressing
they must not have been precompressing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I precompress?
must you precompress?
must he precompress?
must we precompress?
must you precompress?
must they precompress? 	must I be precompressing?
must you be precompressing?
must he be precompressing?
must we be precompressing?
must you be precompressing?
must they be precompressing? 	must I have precompressed?
must you have precompressed?
must he have precompressed?
must we have precompressed?
must you have precompressed?
must they have precompressed? 	must I have been precompressing?
must you have been precompressing?
must he have been precompressing?
must we have been precompressing?
must you have been precompressing?
must they have been precompressing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not precompress?
must you not precompress?
must he not precompress?
must we not precompress?
must you not precompress?
must they not precompress? 	must I not be precompressing?
must you not be precompressing?
must he not be precompressing?
must we not be precompressing?
must you not be precompressing?
must they not be precompressing? 	must I not have precompressed?
must you not have precompressed?
must he not have precompressed?
must we not have precompressed?
must you not have precompressed?
must they not have precompressed? 	must I not have been precompressing?
must you not have been precompressing?
must he not have been precompressing?
must we not have been precompressing?
must you not have been precompressing?
must they not have been precompressing?