must refilter
Verbe régulier : refilter - refiltered- refiltered

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must refilter
you must refilter
she must refilter
we must refilter
you must refilter
they must refilter 	I must be refiltering
you must be refiltering
she must be refiltering
we must be refiltering
you must be refiltering
they must be refiltering	I must have refiltered
you must have refiltered
she must have refiltered
we must have refiltered
you must have refiltered
they must have refiltered	I must have been refiltering
you must have been refiltering
she must have been refiltering
we must have been refiltering
you must have been refiltering
they must have been refiltering	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not refilter
you must not refilter
she must not refilter
we must not refilter
you must not refilter
they must not refilter 	I must not be refiltering
you must not be refiltering
she must not be refiltering
we must not be refiltering
you must not be refiltering
they must not be refiltering	I must not have refiltered
you must not have refiltered
she must not have refiltered
we must not have refiltered
you must not have refiltered
they must not have refiltered	I must not have been refiltering
you must not have been refiltering
she must not have been refiltering
we must not have been refiltering
you must not have been refiltering
they must not have been refiltering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I refilter?
must you refilter?
must she refilter?
must we refilter?
must you refilter?
must they refilter? 	must I be refiltering?
must you be refiltering?
must she be refiltering?
must we be refiltering?
must you be refiltering?
must they be refiltering? 	must I have refiltered?
must you have refiltered?
must she have refiltered?
must we have refiltered?
must you have refiltered?
must they have refiltered? 	must I have been refiltering?
must you have been refiltering?
must she have been refiltering?
must we have been refiltering?
must you have been refiltering?
must they have been refiltering? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not refilter?
must you not refilter?
must she not refilter?
must we not refilter?
must you not refilter?
must they not refilter? 	must I not be refiltering?
must you not be refiltering?
must she not be refiltering?
must we not be refiltering?
must you not be refiltering?
must they not be refiltering? 	must I not have refiltered?
must you not have refiltered?
must she not have refiltered?
must we not have refiltered?
must you not have refiltered?
must they not have refiltered? 	must I not have been refiltering?
must you not have been refiltering?
must she not have been refiltering?
must we not have been refiltering?
must you not have been refiltering?
must they not have been refiltering?