English verb conjugation
COULD CORE

Regular verb: core - cored - cored

Affirmation

Simple form	V-ing form
I could core you could core he could core we could core you could core they could core	I could be coring you could be coring he could be coring we could be coring you could be coring they could be coring
Perfect	V-ing perfect
I could have cored you could have cored he could have cored we could have cored you could have cored they could have cored	I could have been coring you could have been coring he could have been coring we could have been coring you could have been coring they could have been coring

Negation

Simple form	V-ing form
I couldn't core you couldn't core he couldn't core we couldn't core you couldn't core they couldn't core	I couldn't be coring you couldn't be coring he couldn't be coring we couldn't be coring you couldn't be coring they couldn't be coring
Perfect	V-ing perfect
I couldn't have cored you couldn't have cored he couldn't have cored we couldn't have cored you couldn't have cored they couldn't have cored	I couldn't have been coring you couldn't have been coring he couldn't have been coring we couldn't have been coring you couldn't have been coring they couldn't have been coring

Interrogative form

Simple form	V-ing form
could I core? could you core? could he core? could we core? could you core? could they core?	could I be coring? could you be coring? could he be coring? could we be coring? could you be coring? could they be coring?
Perfect	V-ing perfect
could I have cored? could you have cored? could he have cored? could we have cored? could you have cored? could they have cored?	could I have been coring? could you have been coring? could he have been coring? could we have been coring? could you have been coring? could they have been coring?

Interro-negative form

Simple form	V-ing form
couldn't I core? couldn't you core? couldn't he core? couldn't we core? couldn't you core? couldn't they core?	couldn't I be coring? couldn't you be coring? couldn't he be coring? couldn't we be coring? couldn't you be coring? couldn't they be coring?
Perfect	V-ing perfect
couldn't I have cored? couldn't you have cored? couldn't he have cored? couldn't we have cored? couldn't you have cored? couldn't they have cored?	couldn't I have been coring? couldn't you have been coring? couldn't he have been coring? couldn't we have been coring? couldn't you have been coring? couldn't they have been coring?