must cumulate
Regular verb: cumulate - cumulated- cumulated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must cumulate
you must cumulate
he must cumulate
we must cumulate
you must cumulate
they must cumulate 	I must be cumulating
you must be cumulating
he must be cumulating
we must be cumulating
you must be cumulating
they must be cumulating	I must have cumulated
you must have cumulated
he must have cumulated
we must have cumulated
you must have cumulated
they must have cumulated	I must have been cumulating
you must have been cumulating
he must have been cumulating
we must have been cumulating
you must have been cumulating
they must have been cumulating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not cumulate
you must not cumulate
he must not cumulate
we must not cumulate
you must not cumulate
they must not cumulate 	I must not be cumulating
you must not be cumulating
he must not be cumulating
we must not be cumulating
you must not be cumulating
they must not be cumulating	I must not have cumulated
you must not have cumulated
he must not have cumulated
we must not have cumulated
you must not have cumulated
they must not have cumulated	I must not have been cumulating
you must not have been cumulating
he must not have been cumulating
we must not have been cumulating
you must not have been cumulating
they must not have been cumulating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I cumulate?
must you cumulate?
must he cumulate?
must we cumulate?
must you cumulate?
must they cumulate? 	must I be cumulating?
must you be cumulating?
must he be cumulating?
must we be cumulating?
must you be cumulating?
must they be cumulating? 	must I have cumulated?
must you have cumulated?
must he have cumulated?
must we have cumulated?
must you have cumulated?
must they have cumulated? 	must I have been cumulating?
must you have been cumulating?
must he have been cumulating?
must we have been cumulating?
must you have been cumulating?
must they have been cumulating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not cumulate?
must you not cumulate?
must he not cumulate?
must we not cumulate?
must you not cumulate?
must they not cumulate? 	must I not be cumulating?
must you not be cumulating?
must he not be cumulating?
must we not be cumulating?
must you not be cumulating?
must they not be cumulating? 	must I not have cumulated?
must you not have cumulated?
must he not have cumulated?
must we not have cumulated?
must you not have cumulated?
must they not have cumulated? 	must I not have been cumulating?
must you not have been cumulating?
must he not have been cumulating?
must we not have been cumulating?
must you not have been cumulating?
must they not have been cumulating?