could bristle
Verbo regular: bristle - bristled- bristled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could bristle
you could bristle
he could bristle
we could bristle
you could bristle
they could bristle 	I could be bristling
you could be bristling
he could be bristling
we could be bristling
you could be bristling
they could be bristling	I could have bristled
you could have bristled
he could have bristled
we could have bristled
you could have bristled
they could have bristled	I could have been bristling
you could have been bristling
he could have been bristling
we could have been bristling
you could have been bristling
they could have been bristling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't bristle
you couldn't bristle
he couldn't bristle
we couldn't bristle
you couldn't bristle
they couldn't bristle 	I couldn't be bristling
you couldn't be bristling
he couldn't be bristling
we couldn't be bristling
you couldn't be bristling
they couldn't be bristling	I couldn't have bristled
you couldn't have bristled
he couldn't have bristled
we couldn't have bristled
you couldn't have bristled
they couldn't have bristled	I couldn't have been bristling
you couldn't have been bristling
he couldn't have been bristling
we couldn't have been bristling
you couldn't have been bristling
they couldn't have been bristling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I bristle?
could you bristle?
could he bristle?
could we bristle?
could you bristle?
could they bristle? 	could I be bristling?
could you be bristling?
could he be bristling?
could we be bristling?
could you be bristling?
could they be bristling? 	could I have bristled?
could you have bristled?
could he have bristled?
could we have bristled?
could you have bristled?
could they have bristled? 	could I have been bristling?
could you have been bristling?
could he have been bristling?
could we have been bristling?
could you have been bristling?
could they have been bristling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I bristle?
couldn't you bristle?
couldn't he bristle?
couldn't we bristle?
couldn't you bristle?
couldn't they bristle? 	couldn't I be bristling?
couldn't you be bristling?
couldn't he be bristling?
couldn't we be bristling?
couldn't you be bristling?
couldn't they be bristling? 	couldn't I have bristled?
couldn't you have bristled?
couldn't he have bristled?
couldn't we have bristled?
couldn't you have bristled?
couldn't they have bristled? 	couldn't I have been bristling?
couldn't you have been bristling?
couldn't he have been bristling?
couldn't we have been bristling?
couldn't you have been bristling?
couldn't they have been bristling?