must niche
Verbe régulier : niche - niched- niched

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must niche
you must niche
he must niche
we must niche
you must niche
they must niche 	I must be niching
you must be niching
he must be niching
we must be niching
you must be niching
they must be niching	I must have niched
you must have niched
he must have niched
we must have niched
you must have niched
they must have niched	I must have been niching
you must have been niching
he must have been niching
we must have been niching
you must have been niching
they must have been niching	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not niche
you must not niche
he must not niche
we must not niche
you must not niche
they must not niche 	I must not be niching
you must not be niching
he must not be niching
we must not be niching
you must not be niching
they must not be niching	I must not have niched
you must not have niched
he must not have niched
we must not have niched
you must not have niched
they must not have niched	I must not have been niching
you must not have been niching
he must not have been niching
we must not have been niching
you must not have been niching
they must not have been niching	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I niche?
must you niche?
must he niche?
must we niche?
must you niche?
must they niche? 	must I be niching?
must you be niching?
must he be niching?
must we be niching?
must you be niching?
must they be niching? 	must I have niched?
must you have niched?
must he have niched?
must we have niched?
must you have niched?
must they have niched? 	must I have been niching?
must you have been niching?
must he have been niching?
must we have been niching?
must you have been niching?
must they have been niching? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not niche?
must you not niche?
must he not niche?
must we not niche?
must you not niche?
must they not niche? 	must I not be niching?
must you not be niching?
must he not be niching?
must we not be niching?
must you not be niching?
must they not be niching? 	must I not have niched?
must you not have niched?
must he not have niched?
must we not have niched?
must you not have niched?
must they not have niched? 	must I not have been niching?
must you not have been niching?
must he not have been niching?
must we not have been niching?
must you not have been niching?
must they not have been niching?