could ken
Verbo regular: ken - kened- kened

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could ken
you could ken
he could ken
we could ken
you could ken
they could ken 	I could be kening
you could be kening
he could be kening
we could be kening
you could be kening
they could be kening	I could have kened
you could have kened
he could have kened
we could have kened
you could have kened
they could have kened	I could have been kening
you could have been kening
he could have been kening
we could have been kening
you could have been kening
they could have been kening	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not ken
you could not ken
he could not ken
we could not ken
you could not ken
they could not ken 	I could not be kening
you could not be kening
he could not be kening
we could not be kening
you could not be kening
they could not be kening	I could not have kened
you could not have kened
he could not have kened
we could not have kened
you could not have kened
they could not have kened	I could not have been kening
you could not have been kening
he could not have been kening
we could not have been kening
you could not have been kening
they could not have been kening	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I ken?
could you ken?
could he ken?
could we ken?
could you ken?
could they ken? 	could I be kening?
could you be kening?
could he be kening?
could we be kening?
could you be kening?
could they be kening? 	could I have kened?
could you have kened?
could he have kened?
could we have kened?
could you have kened?
could they have kened? 	could I have been kening?
could you have been kening?
could he have been kening?
could we have been kening?
could you have been kening?
could they have been kening? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not ken?
could you not ken?
could he not ken?
could we not ken?
could you not ken?
could they not ken? 	could I not be kening?
could you not be kening?
could he not be kening?
could we not be kening?
could you not be kening?
could they not be kening? 	could I not have kened?
could you not have kened?
could he not have kened?
could we not have kened?
could you not have kened?
could they not have kened? 	could I not have been kening?
could you not have been kening?
could he not have been kening?
could we not have been kening?
could you not have been kening?
could they not have been kening?