English verb conjugation COULD DRUB

Regular verb: drub - drubbed - drubbed

Affirmation

Simple form

I could drub
you could drub
he could drub
we could drub
you could drub
they could drub

V-ing form

I could be drubbing
you could be drubbing
he could be drubbing
we could be drubbing
you could be drubbing
they could be drubbing

Perfect

I could have drubbed
you could have drubbed
he could have drubbed
we could have drubbed
you could have drubbed
they could have drubbed

V-ing perfect

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

Negation

Simple form

I could not drub
you could not drub
he could not drub
we could not drub
you could not drub
they could not drub

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I drub?
could you drub?
could he drub?
could we drub?
could you drub?
could they drub?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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