English verb conjugation
COULD TUBE-FEED

Regular verb: tube-feed - tube-feeded - tube-feeded

Affirmation

Simple form	V-ing form
I could tube-feed you could tube-feed he could tube-feed we could tube-feed you could tube-feed they could tube-feed	I could be tube-feeding you could be tube-feeding he could be tube-feeding we could be tube-feeding you could be tube-feeding they could be tube-feeding
Perfect	V-ing perfect
I could have tube-feeded you could have tube-feeded he could have tube-feeded we could have tube-feeded you could have tube-feeded they could have tube-feeded	I could have been tube-feeding you could have been tube-feeding he could have been tube-feeding we could have been tube-feeding you could have been tube-feeding they could have been tube-feeding

Negation

Simple form	V-ing form
I could not tube-feed you could not tube-feed he could not tube-feed we could not tube-feed you could not tube-feed they could not tube-feed	I could not be tube-feeding you could not be tube-feeding he could not be tube-feeding we could not be tube-feeding you could not be tube-feeding they could not be tube-feeding
Perfect	V-ing perfect
I could not have tube-feeded you could not have tube-feeded he could not have tube-feeded we could not have tube-feeded you could not have tube-feeded they could not have tube-feeded	I could not have been tube-feeding you could not have been tube-feeding he could not have been tube-feeding we could not have been tube-feeding you could not have been tube-feeding they could not have been tube-feeding

Interrogative form

Simple form	V-ing form
could I tube-feed? could you tube-feed? could he tube-feed? could we tube-feed? could you tube-feed? could they tube-feed?	could I be tube-feeding? could you be tube-feeding? could he be tube-feeding? could we be tube-feeding? could you be tube-feeding? could they be tube-feeding?
Perfect	V-ing perfect
could I have tube-feeded? could you have tube-feeded? could he have tube-feeded? could we have tube-feeded? could you have tube-feeded? could they have tube-feeded?	could I have been tube-feeding? could you have been tube-feeding? could he have been tube-feeding? could we have been tube-feeding? could you have been tube-feeding? could they have been tube-feeding?

Interro-negative form

Simple form	V-ing form
could I not tube-feed? could you not tube-feed? could he not tube-feed? could we not tube-feed? could you not tube-feed? could they not tube-feed?	could I not be tube-feeding? could you not be tube-feeding? could he not be tube-feeding? could we not be tube-feeding? could you not be tube-feeding? could they not be tube-feeding?
Perfect	V-ing perfect
could I not have tube-feeded? could you not have tube-feeded? could he not have tube-feeded? could we not have tube-feeded? could you not have tube-feeded? could they not have tube-feeded?	could I not have been tube-feeding? could you not have been tube-feeding? could he not have been tube-feeding? could we not have been tube-feeding? could you not have been tube-feeding? could they not have been tube-feeding?