must precompress
Verbe régulier : precompress - precompressed- precompressed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en 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	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't precompress
you mustn't precompress
he mustn't precompress
we mustn't precompress
you mustn't precompress
they mustn't precompress 	I mustn't be precompressing
you mustn't be precompressing
he mustn't be precompressing
we mustn't be precompressing
you mustn't be precompressing
they mustn't be precompressing	I mustn't have precompressed
you mustn't have precompressed
he mustn't have precompressed
we mustn't have precompressed
you mustn't have precompressed
they mustn't have precompressed	I mustn't have been precompressing
you mustn't have been precompressing
he mustn't have been precompressing
we mustn't have been precompressing
you mustn't have been precompressing
they mustn't have been precompressing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en 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? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I precompress?
mustn't you precompress?
mustn't he precompress?
mustn't we precompress?
mustn't you precompress?
mustn't they precompress? 	mustn't I be precompressing?
mustn't you be precompressing?
mustn't he be precompressing?
mustn't we be precompressing?
mustn't you be precompressing?
mustn't they be precompressing? 	mustn't I have precompressed?
mustn't you have precompressed?
mustn't he have precompressed?
mustn't we have precompressed?
mustn't you have precompressed?
mustn't they have precompressed? 	mustn't I have been precompressing?
mustn't you have been precompressing?
mustn't he have been precompressing?
mustn't we have been precompressing?
mustn't you have been precompressing?
mustn't they have been precompressing?