could bicker
Verbo regular: bicker - bickered- bickered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could bicker
you could bicker
he could bicker
we could bicker
you could bicker
they could bicker 	I could be bickering
you could be bickering
he could be bickering
we could be bickering
you could be bickering
they could be bickering	I could have bickered
you could have bickered
he could have bickered
we could have bickered
you could have bickered
they could have bickered	I could have been bickering
you could have been bickering
he could have been bickering
we could have been bickering
you could have been bickering
they could have been bickering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't bicker
you couldn't bicker
he couldn't bicker
we couldn't bicker
you couldn't bicker
they couldn't bicker 	I couldn't be bickering
you couldn't be bickering
he couldn't be bickering
we couldn't be bickering
you couldn't be bickering
they couldn't be bickering	I couldn't have bickered
you couldn't have bickered
he couldn't have bickered
we couldn't have bickered
you couldn't have bickered
they couldn't have bickered	I couldn't have been bickering
you couldn't have been bickering
he couldn't have been bickering
we couldn't have been bickering
you couldn't have been bickering
they couldn't have been bickering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I bicker?
could you bicker?
could he bicker?
could we bicker?
could you bicker?
could they bicker? 	could I be bickering?
could you be bickering?
could he be bickering?
could we be bickering?
could you be bickering?
could they be bickering? 	could I have bickered?
could you have bickered?
could he have bickered?
could we have bickered?
could you have bickered?
could they have bickered? 	could I have been bickering?
could you have been bickering?
could he have been bickering?
could we have been bickering?
could you have been bickering?
could they have been bickering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I bicker?
couldn't you bicker?
couldn't he bicker?
couldn't we bicker?
couldn't you bicker?
couldn't they bicker? 	couldn't I be bickering?
couldn't you be bickering?
couldn't he be bickering?
couldn't we be bickering?
couldn't you be bickering?
couldn't they be bickering? 	couldn't I have bickered?
couldn't you have bickered?
couldn't he have bickered?
couldn't we have bickered?
couldn't you have bickered?
couldn't they have bickered? 	couldn't I have been bickering?
couldn't you have been bickering?
couldn't he have been bickering?
couldn't we have been bickering?
couldn't you have been bickering?
couldn't they have been bickering?