English verb conjugation COULD RUB

Regular verb: rub - rubbed - rubbed

Affirmation

Simple form

I could rub
you could rub
he could rub
we could rub
you could rub
they could rub

V-ing form

I could be rubbing
you could be rubbing
he could be rubbing
we could be rubbing
you could be rubbing
they could be rubbing

Perfect

I could have rubbed
you could have rubbed
he could have rubbed
we could have rubbed
you could have rubbed
they could have rubbed

V-ing perfect

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

Negation

Simple form

I could not rub
you could not rub
he could not rub
we could not rub
you could not rub
they could not rub

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I rub?
could you rub?
could he rub?
could we rub?
could you rub?
could they rub?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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