must ret
Verbe régulier : ret - retted- retted

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must ret
you must ret
she must ret
we must ret
you must ret
they must ret 	I must be retting
you must be retting
she must be retting
we must be retting
you must be retting
they must be retting	I must have retted
you must have retted
she must have retted
we must have retted
you must have retted
they must have retted	I must have been retting
you must have been retting
she must have been retting
we must have been retting
you must have been retting
they must have been retting	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not ret
you must not ret
she must not ret
we must not ret
you must not ret
they must not ret 	I must not be retting
you must not be retting
she must not be retting
we must not be retting
you must not be retting
they must not be retting	I must not have retted
you must not have retted
she must not have retted
we must not have retted
you must not have retted
they must not have retted	I must not have been retting
you must not have been retting
she must not have been retting
we must not have been retting
you must not have been retting
they must not have been retting	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I ret?
must you ret?
must she ret?
must we ret?
must you ret?
must they ret? 	must I be retting?
must you be retting?
must she be retting?
must we be retting?
must you be retting?
must they be retting? 	must I have retted?
must you have retted?
must she have retted?
must we have retted?
must you have retted?
must they have retted? 	must I have been retting?
must you have been retting?
must she have been retting?
must we have been retting?
must you have been retting?
must they have been retting? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not ret?
must you not ret?
must she not ret?
must we not ret?
must you not ret?
must they not ret? 	must I not be retting?
must you not be retting?
must she not be retting?
must we not be retting?
must you not be retting?
must they not be retting? 	must I not have retted?
must you not have retted?
must she not have retted?
must we not have retted?
must you not have retted?
must they not have retted? 	must I not have been retting?
must you not have been retting?
must she not have been retting?
must we not have been retting?
must you not have been retting?
must they not have been retting?