must cascade
Regular verb: cascade - cascaded- cascaded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not cascade
you must not cascade
he must not cascade
we must not cascade
you must not cascade
they must not cascade 	I must not be cascading
you must not be cascading
he must not be cascading
we must not be cascading
you must not be cascading
they must not be cascading	I must not have cascaded
you must not have cascaded
he must not have cascaded
we must not have cascaded
you must not have cascaded
they must not have cascaded	I must not have been cascading
you must not have been cascading
he must not have been cascading
we must not have been cascading
you must not have been cascading
they must not have been cascading	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not cascade?
must you not cascade?
must he not cascade?
must we not cascade?
must you not cascade?
must they not cascade? 	must I not be cascading?
must you not be cascading?
must he not be cascading?
must we not be cascading?
must you not be cascading?
must they not be cascading? 	must I not have cascaded?
must you not have cascaded?
must he not have cascaded?
must we not have cascaded?
must you not have cascaded?
must they not have cascaded? 	must I not have been cascading?
must you not have been cascading?
must he not have been cascading?
must we not have been cascading?
must you not have been cascading?
must they not have been cascading?