could waken
Regular verb: waken - wakened- wakened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could waken
you could waken
he could waken
we could waken
you could waken
they could waken 	I could be wakening
you could be wakening
he could be wakening
we could be wakening
you could be wakening
they could be wakening	I could have wakened
you could have wakened
he could have wakened
we could have wakened
you could have wakened
they could have wakened	I could have been wakening
you could have been wakening
he could have been wakening
we could have been wakening
you could have been wakening
they could have been wakening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not waken
you could not waken
he could not waken
we could not waken
you could not waken
they could not waken 	I could not be wakening
you could not be wakening
he could not be wakening
we could not be wakening
you could not be wakening
they could not be wakening	I could not have wakened
you could not have wakened
he could not have wakened
we could not have wakened
you could not have wakened
they could not have wakened	I could not have been wakening
you could not have been wakening
he could not have been wakening
we could not have been wakening
you could not have been wakening
they could not have been wakening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I waken?
could you waken?
could he waken?
could we waken?
could you waken?
could they waken? 	could I be wakening?
could you be wakening?
could he be wakening?
could we be wakening?
could you be wakening?
could they be wakening? 	could I have wakened?
could you have wakened?
could he have wakened?
could we have wakened?
could you have wakened?
could they have wakened? 	could I have been wakening?
could you have been wakening?
could he have been wakening?
could we have been wakening?
could you have been wakening?
could they have been wakening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not waken?
could you not waken?
could he not waken?
could we not waken?
could you not waken?
could they not waken? 	could I not be wakening?
could you not be wakening?
could he not be wakening?
could we not be wakening?
could you not be wakening?
could they not be wakening? 	could I not have wakened?
could you not have wakened?
could he not have wakened?
could we not have wakened?
could you not have wakened?
could they not have wakened? 	could I not have been wakening?
could you not have been wakening?
could he not have been wakening?
could we not have been wakening?
could you not have been wakening?
could they not have been wakening?