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 couldn't drub
you couldn't drub
he couldn't drub
we couldn't drub
you couldn't drub
they couldn't drub

V-ing form

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

Perfect

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

V-ing perfect

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

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

V-ing form

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

Perfect

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

V-ing perfect

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

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