must cavil
Verbo regular: cavil - cavilled- cavilled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must cavil
you must cavil
he must cavil
we must cavil
you must cavil
they must cavil 	I must be cavilling
you must be cavilling
he must be cavilling
we must be cavilling
you must be cavilling
they must be cavilling	I must have cavilled
you must have cavilled
he must have cavilled
we must have cavilled
you must have cavilled
they must have cavilled	I must have been cavilling
you must have been cavilling
he must have been cavilling
we must have been cavilling
you must have been cavilling
they must have been cavilling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not cavil
you must not cavil
he must not cavil
we must not cavil
you must not cavil
they must not cavil 	I must not be cavilling
you must not be cavilling
he must not be cavilling
we must not be cavilling
you must not be cavilling
they must not be cavilling	I must not have cavilled
you must not have cavilled
he must not have cavilled
we must not have cavilled
you must not have cavilled
they must not have cavilled	I must not have been cavilling
you must not have been cavilling
he must not have been cavilling
we must not have been cavilling
you must not have been cavilling
they must not have been cavilling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I cavil?
must you cavil?
must he cavil?
must we cavil?
must you cavil?
must they cavil? 	must I be cavilling?
must you be cavilling?
must he be cavilling?
must we be cavilling?
must you be cavilling?
must they be cavilling? 	must I have cavilled?
must you have cavilled?
must he have cavilled?
must we have cavilled?
must you have cavilled?
must they have cavilled? 	must I have been cavilling?
must you have been cavilling?
must he have been cavilling?
must we have been cavilling?
must you have been cavilling?
must they have been cavilling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not cavil?
must you not cavil?
must he not cavil?
must we not cavil?
must you not cavil?
must they not cavil? 	must I not be cavilling?
must you not be cavilling?
must he not be cavilling?
must we not be cavilling?
must you not be cavilling?
must they not be cavilling? 	must I not have cavilled?
must you not have cavilled?
must he not have cavilled?
must we not have cavilled?
must you not have cavilled?
must they not have cavilled? 	must I not have been cavilling?
must you not have been cavilling?
must he not have been cavilling?
must we not have been cavilling?
must you not have been cavilling?
must they not have been cavilling?