English verb conjugation
COULD CARBON-DATE

Regular verb: carbon-date - carbon-dated - carbon-dated

Affirmation

Simple form	V-ing form
I could carbon-date you could carbon-date he could carbon-date we could carbon-date you could carbon-date they could carbon-date	I could be carbon-dating you could be carbon-dating he could be carbon-dating we could be carbon-dating you could be carbon-dating they could be carbon-dating
Perfect	V-ing perfect
I could have carbon-dated you could have carbon-dated he could have carbon-dated we could have carbon-dated you could have carbon-dated they could have carbon-dated	I could have been carbon-dating you could have been carbon-dating he could have been carbon-dating we could have been carbon-dating you could have been carbon-dating they could have been carbon-dating

Negation

Simple form	V-ing form
I couldn't carbon-date you couldn't carbon-date he couldn't carbon-date we couldn't carbon-date you couldn't carbon-date they couldn't carbon-date	I couldn't be carbon-dating you couldn't be carbon-dating he couldn't be carbon-dating we couldn't be carbon-dating you couldn't be carbon-dating they couldn't be carbon-dating
Perfect	V-ing perfect
I couldn't have carbon-dated you couldn't have carbon-dated he couldn't have carbon-dated we couldn't have carbon-dated you couldn't have carbon-dated they couldn't have carbon-dated	I couldn't have been carbon-dating you couldn't have been carbon-dating he couldn't have been carbon-dating we couldn't have been carbon-dating you couldn't have been carbon-dating they couldn't have been carbon-dating

Interrogative form

Simple form	V-ing form
could I carbon-date? could you carbon-date? could he carbon-date? could we carbon-date? could you carbon-date? could they carbon-date?	could I be carbon-dating? could you be carbon-dating? could he be carbon-dating? could we be carbon-dating? could you be carbon-dating? could they be carbon-dating?
Perfect	V-ing perfect
could I have carbon-dated? could you have carbon-dated? could he have carbon-dated? could we have carbon-dated? could you have carbon-dated? could they have carbon-dated?	could I have been carbon-dating? could you have been carbon-dating? could he have been carbon-dating? could we have been carbon-dating? could you have been carbon-dating? could they have been carbon-dating?

Interro-negative form

Simple form	V-ing form
couldn't I carbon-date? couldn't you carbon-date? couldn't he carbon-date? couldn't we carbon-date? couldn't you carbon-date? couldn't they carbon-date?	couldn't I be carbon-dating? couldn't you be carbon-dating? couldn't he be carbon-dating? couldn't we be carbon-dating? couldn't you be carbon-dating? couldn't they be carbon-dating?
Perfect	V-ing perfect
couldn't I have carbon-dated? couldn't you have carbon-dated? couldn't he have carbon-dated? couldn't we have carbon-dated? couldn't you have carbon-dated? couldn't they have carbon-dated?	couldn't I have been carbon-dating? couldn't you have been carbon-dating? couldn't he have been carbon-dating? couldn't we have been carbon-dating? couldn't you have been carbon-dating? couldn't they have been carbon-dating?