could copulate
Verbo regular: copulate - copulated- copulated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could copulate
you could copulate
he could copulate
we could copulate
you could copulate
they could copulate 	I could be copulating
you could be copulating
he could be copulating
we could be copulating
you could be copulating
they could be copulating	I could have copulated
you could have copulated
he could have copulated
we could have copulated
you could have copulated
they could have copulated	I could have been copulating
you could have been copulating
he could have been copulating
we could have been copulating
you could have been copulating
they could have been copulating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't copulate
you couldn't copulate
he couldn't copulate
we couldn't copulate
you couldn't copulate
they couldn't copulate 	I couldn't be copulating
you couldn't be copulating
he couldn't be copulating
we couldn't be copulating
you couldn't be copulating
they couldn't be copulating	I couldn't have copulated
you couldn't have copulated
he couldn't have copulated
we couldn't have copulated
you couldn't have copulated
they couldn't have copulated	I couldn't have been copulating
you couldn't have been copulating
he couldn't have been copulating
we couldn't have been copulating
you couldn't have been copulating
they couldn't have been copulating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I copulate?
could you copulate?
could he copulate?
could we copulate?
could you copulate?
could they copulate? 	could I be copulating?
could you be copulating?
could he be copulating?
could we be copulating?
could you be copulating?
could they be copulating? 	could I have copulated?
could you have copulated?
could he have copulated?
could we have copulated?
could you have copulated?
could they have copulated? 	could I have been copulating?
could you have been copulating?
could he have been copulating?
could we have been copulating?
could you have been copulating?
could they have been copulating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I copulate?
couldn't you copulate?
couldn't he copulate?
couldn't we copulate?
couldn't you copulate?
couldn't they copulate? 	couldn't I be copulating?
couldn't you be copulating?
couldn't he be copulating?
couldn't we be copulating?
couldn't you be copulating?
couldn't they be copulating? 	couldn't I have copulated?
couldn't you have copulated?
couldn't he have copulated?
couldn't we have copulated?
couldn't you have copulated?
couldn't they have copulated? 	couldn't I have been copulating?
couldn't you have been copulating?
couldn't he have been copulating?
couldn't we have been copulating?
couldn't you have been copulating?
couldn't they have been copulating?