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 couldn't burrow
you couldn't burrow
he couldn't burrow
we couldn't burrow
you couldn't burrow
they couldn't burrow

V-ing form

I couldn't be burrowing
you couldn't be burrowing
he couldn't be burrowing
we couldn't be burrowing
you couldn't be burrowing
they couldn't be burrowing

Perfect

I couldn't have burrowed
you couldn't have burrowed
he couldn't have burrowed
we couldn't have burrowed
you couldn't have burrowed
they couldn't have burrowed

V-ing perfect

I couldn't have been burrowing
you couldn't have been burrowing
he couldn't have been burrowing
we couldn't have been burrowing
you couldn't have been burrowing
they couldn't 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

couldn't I burrow?
couldn't you burrow?
couldn't he burrow?
couldn't we burrow?
couldn't you burrow?
couldn't they burrow?

V-ing form

couldn't I be burrowing?
couldn't you be burrowing?
couldn't he be burrowing?
couldn't we be burrowing?
couldn't you be burrowing?
couldn't they be burrowing?

Perfect

couldn't I have burrowed?
couldn't you have burrowed?
couldn't he have burrowed?
couldn't we have burrowed?
couldn't you have burrowed?
couldn't they have burrowed?

V-ing perfect

couldn't I have been burrowing?
couldn't you have been burrowing?
couldn't he have been burrowing?
couldn't we have been burrowing?
couldn't you have been burrowing?
couldn't they have been burrowing?

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