English verb conjugation COULD RUFF

Regular verb: ruff - ruffed - ruffed

Affirmation

Simple form

I could ruff
you could ruff
he could ruff
we could ruff
you could ruff
they could ruff

V-ing form

I could be ruffing
you could be ruffing
he could be ruffing
we could be ruffing
you could be ruffing
they could be ruffing

Perfect

I could have ruffed
you could have ruffed
he could have ruffed
we could have ruffed
you could have ruffed
they could have ruffed

V-ing perfect

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

Negation

Simple form

I couldn't ruff
you couldn't ruff
he couldn't ruff
we couldn't ruff
you couldn't ruff
they couldn't ruff

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I ruff?
could you ruff?
could he ruff?
could we ruff?
could you ruff?
could they ruff?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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