could cumber
Verbo regular: cumber - cumbered- cumbered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could cumber
you could cumber
he could cumber
we could cumber
you could cumber
they could cumber 	I could be cumbering
you could be cumbering
he could be cumbering
we could be cumbering
you could be cumbering
they could be cumbering	I could have cumbered
you could have cumbered
he could have cumbered
we could have cumbered
you could have cumbered
they could have cumbered	I could have been cumbering
you could have been cumbering
he could have been cumbering
we could have been cumbering
you could have been cumbering
they could have been cumbering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not cumber
you could not cumber
he could not cumber
we could not cumber
you could not cumber
they could not cumber 	I could not be cumbering
you could not be cumbering
he could not be cumbering
we could not be cumbering
you could not be cumbering
they could not be cumbering	I could not have cumbered
you could not have cumbered
he could not have cumbered
we could not have cumbered
you could not have cumbered
they could not have cumbered	I could not have been cumbering
you could not have been cumbering
he could not have been cumbering
we could not have been cumbering
you could not have been cumbering
they could not have been cumbering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I cumber?
could you cumber?
could he cumber?
could we cumber?
could you cumber?
could they cumber? 	could I be cumbering?
could you be cumbering?
could he be cumbering?
could we be cumbering?
could you be cumbering?
could they be cumbering? 	could I have cumbered?
could you have cumbered?
could he have cumbered?
could we have cumbered?
could you have cumbered?
could they have cumbered? 	could I have been cumbering?
could you have been cumbering?
could he have been cumbering?
could we have been cumbering?
could you have been cumbering?
could they have been cumbering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not cumber?
could you not cumber?
could he not cumber?
could we not cumber?
could you not cumber?
could they not cumber? 	could I not be cumbering?
could you not be cumbering?
could he not be cumbering?
could we not be cumbering?
could you not be cumbering?
could they not be cumbering? 	could I not have cumbered?
could you not have cumbered?
could he not have cumbered?
could we not have cumbered?
could you not have cumbered?
could they not have cumbered? 	could I not have been cumbering?
could you not have been cumbering?
could he not have been cumbering?
could we not have been cumbering?
could you not have been cumbering?
could they not have been cumbering?