English verb conjugation
CAN FEAST

Regular verb: feast - feasted - feasted

Affirmation

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

Negation

Simple form	V-ing form
I can't feast you can't feast he can't feast we can't feast you can't feast they can't feast	I can't be feasting you can't be feasting he can't be feasting we can't be feasting you can't be feasting they can't be feasting
Perfect	V-ing perfect
I can't have feasted you can't have feasted he can't have feasted we can't have feasted you can't have feasted they can't have feasted	I can't have been feasting you can't have been feasting he can't have been feasting we can't have been feasting you can't have been feasting they can't have been feasting

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can't I feast? can't you feast? can't he feast? can't we feast? can't you feast? can't they feast?	can't I be feasting? can't you be feasting? can't he be feasting? can't we be feasting? can't you be feasting? can't they be feasting?
Perfect	V-ing perfect
can't I have feasted? can't you have feasted? can't he have feasted? can't we have feasted? can't you have feasted? can't they have feasted?	can't I have been feasting? can't you have been feasting? can't he have been feasting? can't we have been feasting? can't you have been feasting? can't they have been feasting?