English verb conjugation
COULD PROTRACT

Regular verb: protract - protracted - protracted

Affirmation

Simple form	V-ing form
I could protract you could protract he could protract we could protract you could protract they could protract	I could be protracting you could be protracting he could be protracting we could be protracting you could be protracting they could be protracting
Perfect	V-ing perfect
I could have protracted you could have protracted he could have protracted we could have protracted you could have protracted they could have protracted	I could have been protracting you could have been protracting he could have been protracting we could have been protracting you could have been protracting they could have been protracting

Negation

Simple form	V-ing form
I couldn't protract you couldn't protract he couldn't protract we couldn't protract you couldn't protract they couldn't protract	I couldn't be protracting you couldn't be protracting he couldn't be protracting we couldn't be protracting you couldn't be protracting they couldn't be protracting
Perfect	V-ing perfect
I couldn't have protracted you couldn't have protracted he couldn't have protracted we couldn't have protracted you couldn't have protracted they couldn't have protracted	I couldn't have been protracting you couldn't have been protracting he couldn't have been protracting we couldn't have been protracting you couldn't have been protracting they couldn't have been protracting

Interrogative form

Simple form	V-ing form
could I protract? could you protract? could he protract? could we protract? could you protract? could they protract?	could I be protracting? could you be protracting? could he be protracting? could we be protracting? could you be protracting? could they be protracting?
Perfect	V-ing perfect
could I have protracted? could you have protracted? could he have protracted? could we have protracted? could you have protracted? could they have protracted?	could I have been protracting? could you have been protracting? could he have been protracting? could we have been protracting? could you have been protracting? could they have been protracting?

Interro-negative form

Simple form	V-ing form
couldn't I protract? couldn't you protract? couldn't he protract? couldn't we protract? couldn't you protract? couldn't they protract?	couldn't I be protracting? couldn't you be protracting? couldn't he be protracting? couldn't we be protracting? couldn't you be protracting? couldn't they be protracting?
Perfect	V-ing perfect
couldn't I have protracted? couldn't you have protracted? couldn't he have protracted? couldn't we have protracted? couldn't you have protracted? couldn't they have protracted?	couldn't I have been protracting? couldn't you have been protracting? couldn't he have been protracting? couldn't we have been protracting? couldn't you have been protracting? couldn't they have been protracting?