English verb conjugation
COULD EMEND

Regular verb: emend - emended - emended

Affirmation

Simple form	V-ing form
I could emend you could emend he could emend we could emend you could emend they could emend	I could be emending you could be emending he could be emending we could be emending you could be emending they could be emending
Perfect	V-ing perfect
I could have emended you could have emended he could have emended we could have emended you could have emended they could have emended	I could have been emending you could have been emending he could have been emending we could have been emending you could have been emending they could have been emending

Negation

Simple form	V-ing form
I couldn't emend you couldn't emend he couldn't emend we couldn't emend you couldn't emend they couldn't emend	I couldn't be emending you couldn't be emending he couldn't be emending we couldn't be emending you couldn't be emending they couldn't be emending
Perfect	V-ing perfect
I couldn't have emended you couldn't have emended he couldn't have emended we couldn't have emended you couldn't have emended they couldn't have emended	I couldn't have been emending you couldn't have been emending he couldn't have been emending we couldn't have been emending you couldn't have been emending they couldn't have been emending

Interrogative form

Simple form	V-ing form
could I emend? could you emend? could he emend? could we emend? could you emend? could they emend?	could I be emending? could you be emending? could he be emending? could we be emending? could you be emending? could they be emending?
Perfect	V-ing perfect
could I have emended? could you have emended? could he have emended? could we have emended? could you have emended? could they have emended?	could I have been emending? could you have been emending? could he have been emending? could we have been emending? could you have been emending? could they have been emending?

Interro-negative form

Simple form	V-ing form
couldn't I emend? couldn't you emend? couldn't he emend? couldn't we emend? couldn't you emend? couldn't they emend?	couldn't I be emending? couldn't you be emending? couldn't he be emending? couldn't we be emending? couldn't you be emending? couldn't they be emending?
Perfect	V-ing perfect
couldn't I have emended? couldn't you have emended? couldn't he have emended? couldn't we have emended? couldn't you have emended? couldn't they have emended?	couldn't I have been emending? couldn't you have been emending? couldn't he have been emending? couldn't we have been emending? couldn't you have been emending? couldn't they have been emending?