English verb conjugation COULD BURROW

Regular verb: burrow - burrowed - burrowed

Affirmation

Simple form

I could burrow
you could burrow
he could burrow
we could burrow
you could burrow
they could burrow

V-ing form

I could be burrowing
you could be burrowing
he could be burrowing
we could be burrowing
you could be burrowing
they could be burrowing

Perfect

I could have burrowed
you could have burrowed
he could have burrowed
we could have burrowed
you could have burrowed
they could have burrowed

V-ing perfect

I could have been burrowing
you could have been burrowing
he could have been burrowing
we could have been burrowing
you could have been burrowing
they could have been burrowing

Negation

Simple form

I could not burrow
you could not burrow
he could not burrow
we could not burrow
you could not burrow
they could not burrow

V-ing form

I could not be burrowing
you could not be burrowing
he could not be burrowing
we could not be burrowing
you could not be burrowing
they could not be burrowing

Perfect

I could not have burrowed
you could not have burrowed
he could not have burrowed
we could not have burrowed
you could not have burrowed
they could not have burrowed

V-ing perfect

I could not have been burrowing
you could not have been burrowing
he could not have been burrowing
we could not have been burrowing
you could not have been burrowing
they could not have been burrowing

Interrogative form

Simple form

could I burrow?
could you burrow?
could he burrow?
could we burrow?
could you burrow?
could they burrow?

V-ing form

could I be burrowing?
could you be burrowing?
could he be burrowing?
could we be burrowing?
could you be burrowing?
could they be burrowing?

Perfect

could I have burrowed?
could you have burrowed?
could he have burrowed?
could we have burrowed?
could you have burrowed?
could they have burrowed?

V-ing perfect

could I have been burrowing?
could you have been burrowing?
could he have been burrowing?
could we have been burrowing?
could you have been burrowing?
could they have been burrowing?

Interro-negative form

Simple form

could I not burrow?
could you not burrow?
could he not burrow?
could we not burrow?
could you not burrow?
could they not burrow?

V-ing form

could I not be burrowing?
could you not be burrowing?
could he not be burrowing?
could we not be burrowing?
could you not be burrowing?
could they not be burrowing?

Perfect

could I not have burrowed?
could you not have burrowed?
could he not have burrowed?
could we not have burrowed?
could you not have burrowed?
could they not have burrowed?

V-ing perfect

could I not have been burrowing?
could you not have been burrowing?
could he not have been burrowing?
could we not have been burrowing?
could you not have been burrowing?
could they not have been burrowing?

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