can cumber
Verbo regular: cumber - cumbered- cumbered

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

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

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

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