English verb conjugation
COULD BREAKFAST

Regular verb: breakfast - breakfasted - breakfasted

Affirmation

Simple form	V-ing form
I could breakfast you could breakfast she could breakfast we could breakfast you could breakfast they could breakfast	I could be breakfasting you could be breakfasting she could be breakfasting we could be breakfasting you could be breakfasting they could be breakfasting
Perfect	V-ing perfect
I could have breakfasted you could have breakfasted she could have breakfasted we could have breakfasted you could have breakfasted they could have breakfasted	I could have been breakfasting you could have been breakfasting she could have been breakfasting we could have been breakfasting you could have been breakfasting they could have been breakfasting

Negation

Simple form	V-ing form
I couldn't breakfast you couldn't breakfast she couldn't breakfast we couldn't breakfast you couldn't breakfast they couldn't breakfast	I couldn't be breakfasting you couldn't be breakfasting she couldn't be breakfasting we couldn't be breakfasting you couldn't be breakfasting they couldn't be breakfasting
Perfect	V-ing perfect
I couldn't have breakfasted you couldn't have breakfasted she couldn't have breakfasted we couldn't have breakfasted you couldn't have breakfasted they couldn't have breakfasted	I couldn't have been breakfasting you couldn't have been breakfasting she couldn't have been breakfasting we couldn't have been breakfasting you couldn't have been breakfasting they couldn't have been breakfasting

Interrogative form

Simple form	V-ing form
could I breakfast? could you breakfast? could she breakfast? could we breakfast? could you breakfast? could they breakfast?	could I be breakfasting? could you be breakfasting? could she be breakfasting? could we be breakfasting? could you be breakfasting? could they be breakfasting?
Perfect	V-ing perfect
could I have breakfasted? could you have breakfasted? could she have breakfasted? could we have breakfasted? could you have breakfasted? could they have breakfasted?	could I have been breakfasting? could you have been breakfasting? could she have been breakfasting? could we have been breakfasting? could you have been breakfasting? could they have been breakfasting?

Interro-negative form

Simple form	V-ing form
couldn't I breakfast? couldn't you breakfast? couldn't she breakfast? couldn't we breakfast? couldn't you breakfast? couldn't they breakfast?	couldn't I be breakfasting? couldn't you be breakfasting? couldn't she be breakfasting? couldn't we be breakfasting? couldn't you be breakfasting? couldn't they be breakfasting?
Perfect	V-ing perfect
couldn't I have breakfasted? couldn't you have breakfasted? couldn't she have breakfasted? couldn't we have breakfasted? couldn't you have breakfasted? couldn't they have breakfasted?	couldn't I have been breakfasting? couldn't you have been breakfasting? couldn't she have been breakfasting? couldn't we have been breakfasting? couldn't you have been breakfasting? couldn't they have been breakfasting?