could nictitate
Verbo regular: nictitate - nictitated- nictitated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could nictitate
you could nictitate
he could nictitate
we could nictitate
you could nictitate
they could nictitate 	I could be nictitating
you could be nictitating
he could be nictitating
we could be nictitating
you could be nictitating
they could be nictitating	I could have nictitated
you could have nictitated
he could have nictitated
we could have nictitated
you could have nictitated
they could have nictitated	I could have been nictitating
you could have been nictitating
he could have been nictitating
we could have been nictitating
you could have been nictitating
they could have been nictitating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not nictitate
you could not nictitate
he could not nictitate
we could not nictitate
you could not nictitate
they could not nictitate 	I could not be nictitating
you could not be nictitating
he could not be nictitating
we could not be nictitating
you could not be nictitating
they could not be nictitating	I could not have nictitated
you could not have nictitated
he could not have nictitated
we could not have nictitated
you could not have nictitated
they could not have nictitated	I could not have been nictitating
you could not have been nictitating
he could not have been nictitating
we could not have been nictitating
you could not have been nictitating
they could not have been nictitating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I nictitate?
could you nictitate?
could he nictitate?
could we nictitate?
could you nictitate?
could they nictitate? 	could I be nictitating?
could you be nictitating?
could he be nictitating?
could we be nictitating?
could you be nictitating?
could they be nictitating? 	could I have nictitated?
could you have nictitated?
could he have nictitated?
could we have nictitated?
could you have nictitated?
could they have nictitated? 	could I have been nictitating?
could you have been nictitating?
could he have been nictitating?
could we have been nictitating?
could you have been nictitating?
could they have been nictitating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not nictitate?
could you not nictitate?
could he not nictitate?
could we not nictitate?
could you not nictitate?
could they not nictitate? 	could I not be nictitating?
could you not be nictitating?
could he not be nictitating?
could we not be nictitating?
could you not be nictitating?
could they not be nictitating? 	could I not have nictitated?
could you not have nictitated?
could he not have nictitated?
could we not have nictitated?
could you not have nictitated?
could they not have nictitated? 	could I not have been nictitating?
could you not have been nictitating?
could he not have been nictitating?
could we not have been nictitating?
could you not have been nictitating?
could they not have been nictitating?