English verb conjugation
COULD FEAST

Regular verb: feast - feasted - feasted

Affirmation

Simple form	V-ing form
I could feast you could feast he could feast we could feast you could feast they could feast	I could be feasting you could be feasting he could be feasting we could be feasting you could be feasting they could be feasting
Perfect	V-ing perfect
I could have feasted you could have feasted he could have feasted we could have feasted you could have feasted they could have feasted	I could have been feasting you could have been feasting he could have been feasting we could have been feasting you could have been feasting they could have been feasting

Negation

Simple form	V-ing form
I could not feast you could not feast he could not feast we could not feast you could not feast they could not feast	I could not be feasting you could not be feasting he could not be feasting we could not be feasting you could not be feasting they could not be feasting
Perfect	V-ing perfect
I could not have feasted you could not have feasted he could not have feasted we could not have feasted you could not have feasted they could not have feasted	I could not have been feasting you could not have been feasting he could not have been feasting we could not have been feasting you could not have been feasting they could not have been feasting

Interrogative form

Simple form	V-ing form
could I feast? could you feast? could he feast? could we feast? could you feast? could they feast?	could I be feasting? could you be feasting? could he be feasting? could we be feasting? could you be feasting? could they be feasting?
Perfect	V-ing perfect
could I have feasted? could you have feasted? could he have feasted? could we have feasted? could you have feasted? could they have feasted?	could I have been feasting? could you have been feasting? could he have been feasting? could we have been feasting? could you have been feasting? could they have been feasting?

Interro-negative form

Simple form	V-ing form
could I not feast? could you not feast? could he not feast? could we not feast? could you not feast? could they not feast?	could I not be feasting? could you not be feasting? could he not be feasting? could we not be feasting? could you not be feasting? could they not be feasting?
Perfect	V-ing perfect
could I not have feasted? could you not have feasted? could he not have feasted? could we not have feasted? could you not have feasted? could they not have feasted?	could I not have been feasting? could you not have been feasting? could he not have been feasting? could we not have been feasting? could you not have been feasting? could they not have been feasting?