English verb conjugation
COULD EXTIRPATE

Regular verb: extirpate - extirpated - extirpated

Affirmation

Simple form	V-ing form
I could extirpate you could extirpate she could extirpate we could extirpate you could extirpate they could extirpate	I could be extirpating you could be extirpating she could be extirpating we could be extirpating you could be extirpating they could be extirpating
Perfect	V-ing perfect
I could have extirpated you could have extirpated she could have extirpated we could have extirpated you could have extirpated they could have extirpated	I could have been extirpating you could have been extirpating she could have been extirpating we could have been extirpating you could have been extirpating they could have been extirpating

Negation

Simple form	V-ing form
I could not extirpate you could not extirpate she could not extirpate we could not extirpate you could not extirpate they could not extirpate	I could not be extirpating you could not be extirpating she could not be extirpating we could not be extirpating you could not be extirpating they could not be extirpating
Perfect	V-ing perfect
I could not have extirpated you could not have extirpated she could not have extirpated we could not have extirpated you could not have extirpated they could not have extirpated	I could not have been extirpating you could not have been extirpating she could not have been extirpating we could not have been extirpating you could not have been extirpating they could not have been extirpating

Interrogative form

Simple form	V-ing form
could I extirpate? could you extirpate? could she extirpate? could we extirpate? could you extirpate? could they extirpate?	could I be extirpating? could you be extirpating? could she be extirpating? could we be extirpating? could you be extirpating? could they be extirpating?
Perfect	V-ing perfect
could I have extirpated? could you have extirpated? could she have extirpated? could we have extirpated? could you have extirpated? could they have extirpated?	could I have been extirpating? could you have been extirpating? could she have been extirpating? could we have been extirpating? could you have been extirpating? could they have been extirpating?

Interro-negative form

Simple form	V-ing form
could I not extirpate? could you not extirpate? could she not extirpate? could we not extirpate? could you not extirpate? could they not extirpate?	could I not be extirpating? could you not be extirpating? could she not be extirpating? could we not be extirpating? could you not be extirpating? could they not be extirpating?
Perfect	V-ing perfect
could I not have extirpated? could you not have extirpated? could she not have extirpated? could we not have extirpated? could you not have extirpated? could they not have extirpated?	could I not have been extirpating? could you not have been extirpating? could she not have been extirpating? could we not have been extirpating? could you not have been extirpating? could they not have been extirpating?