English verb conjugation
COULD ENDURE

Regular verb: endure - endured - endured

Affirmation

Simple form	V-ing form
I could endure you could endure he could endure we could endure you could endure they could endure	I could be enduring you could be enduring he could be enduring we could be enduring you could be enduring they could be enduring
Perfect	V-ing perfect
I could have endured you could have endured he could have endured we could have endured you could have endured they could have endured	I could have been enduring you could have been enduring he could have been enduring we could have been enduring you could have been enduring they could have been enduring

Negation

Simple form	V-ing form
I couldn't endure you couldn't endure he couldn't endure we couldn't endure you couldn't endure they couldn't endure	I couldn't be enduring you couldn't be enduring he couldn't be enduring we couldn't be enduring you couldn't be enduring they couldn't be enduring
Perfect	V-ing perfect
I couldn't have endured you couldn't have endured he couldn't have endured we couldn't have endured you couldn't have endured they couldn't have endured	I couldn't have been enduring you couldn't have been enduring he couldn't have been enduring we couldn't have been enduring you couldn't have been enduring they couldn't have been enduring

Interrogative form

Simple form	V-ing form
could I endure? could you endure? could he endure? could we endure? could you endure? could they endure?	could I be enduring? could you be enduring? could he be enduring? could we be enduring? could you be enduring? could they be enduring?
Perfect	V-ing perfect
could I have endured? could you have endured? could he have endured? could we have endured? could you have endured? could they have endured?	could I have been enduring? could you have been enduring? could he have been enduring? could we have been enduring? could you have been enduring? could they have been enduring?

Interro-negative form

Simple form	V-ing form
couldn't I endure? couldn't you endure? couldn't he endure? couldn't we endure? couldn't you endure? couldn't they endure?	couldn't I be enduring? couldn't you be enduring? couldn't he be enduring? couldn't we be enduring? couldn't you be enduring? couldn't they be enduring?
Perfect	V-ing perfect
couldn't I have endured? couldn't you have endured? couldn't he have endured? couldn't we have endured? couldn't you have endured? couldn't they have endured?	couldn't I have been enduring? couldn't you have been enduring? couldn't he have been enduring? couldn't we have been enduring? couldn't you have been enduring? couldn't they have been enduring?