could matriculate
Verbo regular: matriculate - matriculated- matriculated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could matriculate
you could matriculate
he could matriculate
we could matriculate
you could matriculate
they could matriculate 	I could be matriculating
you could be matriculating
he could be matriculating
we could be matriculating
you could be matriculating
they could be matriculating	I could have matriculated
you could have matriculated
he could have matriculated
we could have matriculated
you could have matriculated
they could have matriculated	I could have been matriculating
you could have been matriculating
he could have been matriculating
we could have been matriculating
you could have been matriculating
they could have been matriculating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not matriculate
you could not matriculate
he could not matriculate
we could not matriculate
you could not matriculate
they could not matriculate 	I could not be matriculating
you could not be matriculating
he could not be matriculating
we could not be matriculating
you could not be matriculating
they could not be matriculating	I could not have matriculated
you could not have matriculated
he could not have matriculated
we could not have matriculated
you could not have matriculated
they could not have matriculated	I could not have been matriculating
you could not have been matriculating
he could not have been matriculating
we could not have been matriculating
you could not have been matriculating
they could not have been matriculating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I matriculate?
could you matriculate?
could he matriculate?
could we matriculate?
could you matriculate?
could they matriculate? 	could I be matriculating?
could you be matriculating?
could he be matriculating?
could we be matriculating?
could you be matriculating?
could they be matriculating? 	could I have matriculated?
could you have matriculated?
could he have matriculated?
could we have matriculated?
could you have matriculated?
could they have matriculated? 	could I have been matriculating?
could you have been matriculating?
could he have been matriculating?
could we have been matriculating?
could you have been matriculating?
could they have been matriculating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not matriculate?
could you not matriculate?
could he not matriculate?
could we not matriculate?
could you not matriculate?
could they not matriculate? 	could I not be matriculating?
could you not be matriculating?
could he not be matriculating?
could we not be matriculating?
could you not be matriculating?
could they not be matriculating? 	could I not have matriculated?
could you not have matriculated?
could he not have matriculated?
could we not have matriculated?
could you not have matriculated?
could they not have matriculated? 	could I not have been matriculating?
could you not have been matriculating?
could he not have been matriculating?
could we not have been matriculating?
could you not have been matriculating?
could they not have been matriculating?