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 couldn't tub
you couldn't tub
he couldn't tub
we couldn't tub
you couldn't tub
they couldn't tub

V-ing form

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

Perfect

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

V-ing perfect

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

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

V-ing form

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

Perfect

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

V-ing perfect

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