could nicker
Verbo regular: nicker - nickered- nickered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could nicker
you could nicker
he could nicker
we could nicker
you could nicker
they could nicker 	I could be nickering
you could be nickering
he could be nickering
we could be nickering
you could be nickering
they could be nickering	I could have nickered
you could have nickered
he could have nickered
we could have nickered
you could have nickered
they could have nickered	I could have been nickering
you could have been nickering
he could have been nickering
we could have been nickering
you could have been nickering
they could have been nickering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not nicker
you could not nicker
he could not nicker
we could not nicker
you could not nicker
they could not nicker 	I could not be nickering
you could not be nickering
he could not be nickering
we could not be nickering
you could not be nickering
they could not be nickering	I could not have nickered
you could not have nickered
he could not have nickered
we could not have nickered
you could not have nickered
they could not have nickered	I could not have been nickering
you could not have been nickering
he could not have been nickering
we could not have been nickering
you could not have been nickering
they could not have been nickering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I nicker?
could you nicker?
could he nicker?
could we nicker?
could you nicker?
could they nicker? 	could I be nickering?
could you be nickering?
could he be nickering?
could we be nickering?
could you be nickering?
could they be nickering? 	could I have nickered?
could you have nickered?
could he have nickered?
could we have nickered?
could you have nickered?
could they have nickered? 	could I have been nickering?
could you have been nickering?
could he have been nickering?
could we have been nickering?
could you have been nickering?
could they have been nickering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not nicker?
could you not nicker?
could he not nicker?
could we not nicker?
could you not nicker?
could they not nicker? 	could I not be nickering?
could you not be nickering?
could he not be nickering?
could we not be nickering?
could you not be nickering?
could they not be nickering? 	could I not have nickered?
could you not have nickered?
could he not have nickered?
could we not have nickered?
could you not have nickered?
could they not have nickered? 	could I not have been nickering?
could you not have been nickering?
could he not have been nickering?
could we not have been nickering?
could you not have been nickering?
could they not have been nickering?