must copulate
Regular verb: copulate - copulated- copulated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must copulate
you must copulate
he must copulate
we must copulate
you must copulate
they must copulate 	I must be copulating
you must be copulating
he must be copulating
we must be copulating
you must be copulating
they must be copulating	I must have copulated
you must have copulated
he must have copulated
we must have copulated
you must have copulated
they must have copulated	I must have been copulating
you must have been copulating
he must have been copulating
we must have been copulating
you must have been copulating
they must have been copulating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't copulate
you mustn't copulate
he mustn't copulate
we mustn't copulate
you mustn't copulate
they mustn't copulate 	I mustn't be copulating
you mustn't be copulating
he mustn't be copulating
we mustn't be copulating
you mustn't be copulating
they mustn't be copulating	I mustn't have copulated
you mustn't have copulated
he mustn't have copulated
we mustn't have copulated
you mustn't have copulated
they mustn't have copulated	I mustn't have been copulating
you mustn't have been copulating
he mustn't have been copulating
we mustn't have been copulating
you mustn't have been copulating
they mustn't have been copulating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I copulate?
must you copulate?
must he copulate?
must we copulate?
must you copulate?
must they copulate? 	must I be copulating?
must you be copulating?
must he be copulating?
must we be copulating?
must you be copulating?
must they be copulating? 	must I have copulated?
must you have copulated?
must he have copulated?
must we have copulated?
must you have copulated?
must they have copulated? 	must I have been copulating?
must you have been copulating?
must he have been copulating?
must we have been copulating?
must you have been copulating?
must they have been copulating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I copulate?
mustn't you copulate?
mustn't he copulate?
mustn't we copulate?
mustn't you copulate?
mustn't they copulate? 	mustn't I be copulating?
mustn't you be copulating?
mustn't he be copulating?
mustn't we be copulating?
mustn't you be copulating?
mustn't they be copulating? 	mustn't I have copulated?
mustn't you have copulated?
mustn't he have copulated?
mustn't we have copulated?
mustn't you have copulated?
mustn't they have copulated? 	mustn't I have been copulating?
mustn't you have been copulating?
mustn't he have been copulating?
mustn't we have been copulating?
mustn't you have been copulating?
mustn't they have been copulating?