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
she must precompress
we must precompress
you must precompress
they must precompress 	I must be precompressing
you must be precompressing
she must be precompressing
we must be precompressing
you must be precompressing
they must be precompressing	I must have precompressed
you must have precompressed
she 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
she 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
she 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
she 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
she 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
she 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 she precompress?
must we precompress?
must you precompress?
must they precompress? 	must I be precompressing?
must you be precompressing?
must she be precompressing?
must we be precompressing?
must you be precompressing?
must they be precompressing? 	must I have precompressed?
must you have precompressed?
must she 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 she 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 she 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 she 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 she 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 she have been precompressing?
mustn't we have been precompressing?
mustn't you have been precompressing?
mustn't they have been precompressing?