could nod
Verbo regular: nod - nodded- nodded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could nod
you could nod
she could nod
we could nod
you could nod
they could nod 	I could be nodding
you could be nodding
she could be nodding
we could be nodding
you could be nodding
they could be nodding	I could have nodded
you could have nodded
she could have nodded
we could have nodded
you could have nodded
they could have nodded	I could have been nodding
you could have been nodding
she could have been nodding
we could have been nodding
you could have been nodding
they could have been nodding	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not nod
you could not nod
she could not nod
we could not nod
you could not nod
they could not nod 	I could not be nodding
you could not be nodding
she could not be nodding
we could not be nodding
you could not be nodding
they could not be nodding	I could not have nodded
you could not have nodded
she could not have nodded
we could not have nodded
you could not have nodded
they could not have nodded	I could not have been nodding
you could not have been nodding
she could not have been nodding
we could not have been nodding
you could not have been nodding
they could not have been nodding	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I nod?
could you nod?
could she nod?
could we nod?
could you nod?
could they nod? 	could I be nodding?
could you be nodding?
could she be nodding?
could we be nodding?
could you be nodding?
could they be nodding? 	could I have nodded?
could you have nodded?
could she have nodded?
could we have nodded?
could you have nodded?
could they have nodded? 	could I have been nodding?
could you have been nodding?
could she have been nodding?
could we have been nodding?
could you have been nodding?
could they have been nodding? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not nod?
could you not nod?
could she not nod?
could we not nod?
could you not nod?
could they not nod? 	could I not be nodding?
could you not be nodding?
could she not be nodding?
could we not be nodding?
could you not be nodding?
could they not be nodding? 	could I not have nodded?
could you not have nodded?
could she not have nodded?
could we not have nodded?
could you not have nodded?
could they not have nodded? 	could I not have been nodding?
could you not have been nodding?
could she not have been nodding?
could we not have been nodding?
could you not have been nodding?
could they not have been nodding?