could forgo
Regular verb: forgo - forgoed- forgoed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could forgo
you could forgo
he could forgo
we could forgo
you could forgo
they could forgo 	I could be forgoing
you could be forgoing
he could be forgoing
we could be forgoing
you could be forgoing
they could be forgoing	I could have forgoed
you could have forgoed
he could have forgoed
we could have forgoed
you could have forgoed
they could have forgoed	I could have been forgoing
you could have been forgoing
he could have been forgoing
we could have been forgoing
you could have been forgoing
they could have been forgoing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't forgo
you couldn't forgo
he couldn't forgo
we couldn't forgo
you couldn't forgo
they couldn't forgo 	I couldn't be forgoing
you couldn't be forgoing
he couldn't be forgoing
we couldn't be forgoing
you couldn't be forgoing
they couldn't be forgoing	I couldn't have forgoed
you couldn't have forgoed
he couldn't have forgoed
we couldn't have forgoed
you couldn't have forgoed
they couldn't have forgoed	I couldn't have been forgoing
you couldn't have been forgoing
he couldn't have been forgoing
we couldn't have been forgoing
you couldn't have been forgoing
they couldn't have been forgoing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I forgo?
could you forgo?
could he forgo?
could we forgo?
could you forgo?
could they forgo? 	could I be forgoing?
could you be forgoing?
could he be forgoing?
could we be forgoing?
could you be forgoing?
could they be forgoing? 	could I have forgoed?
could you have forgoed?
could he have forgoed?
could we have forgoed?
could you have forgoed?
could they have forgoed? 	could I have been forgoing?
could you have been forgoing?
could he have been forgoing?
could we have been forgoing?
could you have been forgoing?
could they have been forgoing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I forgo?
couldn't you forgo?
couldn't he forgo?
couldn't we forgo?
couldn't you forgo?
couldn't they forgo? 	couldn't I be forgoing?
couldn't you be forgoing?
couldn't he be forgoing?
couldn't we be forgoing?
couldn't you be forgoing?
couldn't they be forgoing? 	couldn't I have forgoed?
couldn't you have forgoed?
couldn't he have forgoed?
couldn't we have forgoed?
couldn't you have forgoed?
couldn't they have forgoed? 	couldn't I have been forgoing?
couldn't you have been forgoing?
couldn't he have been forgoing?
couldn't we have been forgoing?
couldn't you have been forgoing?
couldn't they have been forgoing?