must canter
Verbo regular: canter - cantered- cantered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must canter
you must canter
he must canter
we must canter
you must canter
they must canter 	I must be cantering
you must be cantering
he must be cantering
we must be cantering
you must be cantering
they must be cantering	I must have cantered
you must have cantered
he must have cantered
we must have cantered
you must have cantered
they must have cantered	I must have been cantering
you must have been cantering
he must have been cantering
we must have been cantering
you must have been cantering
they must have been cantering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not canter
you must not canter
he must not canter
we must not canter
you must not canter
they must not canter 	I must not be cantering
you must not be cantering
he must not be cantering
we must not be cantering
you must not be cantering
they must not be cantering	I must not have cantered
you must not have cantered
he must not have cantered
we must not have cantered
you must not have cantered
they must not have cantered	I must not have been cantering
you must not have been cantering
he must not have been cantering
we must not have been cantering
you must not have been cantering
they must not have been cantering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I canter?
must you canter?
must he canter?
must we canter?
must you canter?
must they canter? 	must I be cantering?
must you be cantering?
must he be cantering?
must we be cantering?
must you be cantering?
must they be cantering? 	must I have cantered?
must you have cantered?
must he have cantered?
must we have cantered?
must you have cantered?
must they have cantered? 	must I have been cantering?
must you have been cantering?
must he have been cantering?
must we have been cantering?
must you have been cantering?
must they have been cantering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not canter?
must you not canter?
must he not canter?
must we not canter?
must you not canter?
must they not canter? 	must I not be cantering?
must you not be cantering?
must he not be cantering?
must we not be cantering?
must you not be cantering?
must they not be cantering? 	must I not have cantered?
must you not have cantered?
must he not have cantered?
must we not have cantered?
must you not have cantered?
must they not have cantered? 	must I not have been cantering?
must you not have been cantering?
must he not have been cantering?
must we not have been cantering?
must you not have been cantering?
must they not have been cantering?