must cascade
Verbo regular: cascade - cascaded- cascaded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must cascade
you must cascade
he must cascade
we must cascade
you must cascade
they must cascade 	I must be cascading
you must be cascading
he must be cascading
we must be cascading
you must be cascading
they must be cascading	I must have cascaded
you must have cascaded
he must have cascaded
we must have cascaded
you must have cascaded
they must have cascaded	I must have been cascading
you must have been cascading
he must have been cascading
we must have been cascading
you must have been cascading
they must have been cascading	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't cascade
you mustn't cascade
he mustn't cascade
we mustn't cascade
you mustn't cascade
they mustn't cascade 	I mustn't be cascading
you mustn't be cascading
he mustn't be cascading
we mustn't be cascading
you mustn't be cascading
they mustn't be cascading	I mustn't have cascaded
you mustn't have cascaded
he mustn't have cascaded
we mustn't have cascaded
you mustn't have cascaded
they mustn't have cascaded	I mustn't have been cascading
you mustn't have been cascading
he mustn't have been cascading
we mustn't have been cascading
you mustn't have been cascading
they mustn't have been cascading	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I cascade?
must you cascade?
must he cascade?
must we cascade?
must you cascade?
must they cascade? 	must I be cascading?
must you be cascading?
must he be cascading?
must we be cascading?
must you be cascading?
must they be cascading? 	must I have cascaded?
must you have cascaded?
must he have cascaded?
must we have cascaded?
must you have cascaded?
must they have cascaded? 	must I have been cascading?
must you have been cascading?
must he have been cascading?
must we have been cascading?
must you have been cascading?
must they have been cascading? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I cascade?
mustn't you cascade?
mustn't he cascade?
mustn't we cascade?
mustn't you cascade?
mustn't they cascade? 	mustn't I be cascading?
mustn't you be cascading?
mustn't he be cascading?
mustn't we be cascading?
mustn't you be cascading?
mustn't they be cascading? 	mustn't I have cascaded?
mustn't you have cascaded?
mustn't he have cascaded?
mustn't we have cascaded?
mustn't you have cascaded?
mustn't they have cascaded? 	mustn't I have been cascading?
mustn't you have been cascading?
mustn't he have been cascading?
mustn't we have been cascading?
mustn't you have been cascading?
mustn't they have been cascading?