must vitiate
Verbo regular: vitiate - vitiated- vitiated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must vitiate
you must vitiate
he must vitiate
we must vitiate
you must vitiate
they must vitiate 	I must be vitiating
you must be vitiating
he must be vitiating
we must be vitiating
you must be vitiating
they must be vitiating	I must have vitiated
you must have vitiated
he must have vitiated
we must have vitiated
you must have vitiated
they must have vitiated	I must have been vitiating
you must have been vitiating
he must have been vitiating
we must have been vitiating
you must have been vitiating
they must have been vitiating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not vitiate
you must not vitiate
he must not vitiate
we must not vitiate
you must not vitiate
they must not vitiate 	I must not be vitiating
you must not be vitiating
he must not be vitiating
we must not be vitiating
you must not be vitiating
they must not be vitiating	I must not have vitiated
you must not have vitiated
he must not have vitiated
we must not have vitiated
you must not have vitiated
they must not have vitiated	I must not have been vitiating
you must not have been vitiating
he must not have been vitiating
we must not have been vitiating
you must not have been vitiating
they must not have been vitiating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I vitiate?
must you vitiate?
must he vitiate?
must we vitiate?
must you vitiate?
must they vitiate? 	must I be vitiating?
must you be vitiating?
must he be vitiating?
must we be vitiating?
must you be vitiating?
must they be vitiating? 	must I have vitiated?
must you have vitiated?
must he have vitiated?
must we have vitiated?
must you have vitiated?
must they have vitiated? 	must I have been vitiating?
must you have been vitiating?
must he have been vitiating?
must we have been vitiating?
must you have been vitiating?
must they have been vitiating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not vitiate?
must you not vitiate?
must he not vitiate?
must we not vitiate?
must you not vitiate?
must they not vitiate? 	must I not be vitiating?
must you not be vitiating?
must he not be vitiating?
must we not be vitiating?
must you not be vitiating?
must they not be vitiating? 	must I not have vitiated?
must you not have vitiated?
must he not have vitiated?
must we not have vitiated?
must you not have vitiated?
must they not have vitiated? 	must I not have been vitiating?
must you not have been vitiating?
must he not have been vitiating?
must we not have been vitiating?
must you not have been vitiating?
must they not have been vitiating?