could waver
Regular verb: waver - wavered- wavered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could waver
you could waver
he could waver
we could waver
you could waver
they could waver 	I could be wavering
you could be wavering
he could be wavering
we could be wavering
you could be wavering
they could be wavering	I could have wavered
you could have wavered
he could have wavered
we could have wavered
you could have wavered
they could have wavered	I could have been wavering
you could have been wavering
he could have been wavering
we could have been wavering
you could have been wavering
they could have been wavering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not waver
you could not waver
he could not waver
we could not waver
you could not waver
they could not waver 	I could not be wavering
you could not be wavering
he could not be wavering
we could not be wavering
you could not be wavering
they could not be wavering	I could not have wavered
you could not have wavered
he could not have wavered
we could not have wavered
you could not have wavered
they could not have wavered	I could not have been wavering
you could not have been wavering
he could not have been wavering
we could not have been wavering
you could not have been wavering
they could not have been wavering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I waver?
could you waver?
could he waver?
could we waver?
could you waver?
could they waver? 	could I be wavering?
could you be wavering?
could he be wavering?
could we be wavering?
could you be wavering?
could they be wavering? 	could I have wavered?
could you have wavered?
could he have wavered?
could we have wavered?
could you have wavered?
could they have wavered? 	could I have been wavering?
could you have been wavering?
could he have been wavering?
could we have been wavering?
could you have been wavering?
could they have been wavering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not waver?
could you not waver?
could he not waver?
could we not waver?
could you not waver?
could they not waver? 	could I not be wavering?
could you not be wavering?
could he not be wavering?
could we not be wavering?
could you not be wavering?
could they not be wavering? 	could I not have wavered?
could you not have wavered?
could he not have wavered?
could we not have wavered?
could you not have wavered?
could they not have wavered? 	could I not have been wavering?
could you not have been wavering?
could he not have been wavering?
could we not have been wavering?
could you not have been wavering?
could they not have been wavering?