English verb conjugation COULD TUB

Regular verb: tub - tubbed - tubbed

Affirmation

Simple form

I could tub
you could tub
he could tub
we could tub
you could tub
they could tub

V-ing form

I could be tubbing
you could be tubbing
he could be tubbing
we could be tubbing
you could be tubbing
they could be tubbing

Perfect

I could have tubbed
you could have tubbed
he could have tubbed
we could have tubbed
you could have tubbed
they could have tubbed

V-ing perfect

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

Negation

Simple form

I could not tub
you could not tub
he could not tub
we could not tub
you could not tub
they could not tub

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I tub?
could you tub?
could he tub?
could we tub?
could you tub?
could they tub?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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