English verb conjugation COULD DESCALE

Regular verb: descale - descaled - descaled

Affirmation

Simple form

I could descale
you could descale
he could descale
we could descale
you could descale
they could descale

V-ing form

I could be descaling
you could be descaling
he could be descaling
we could be descaling
you could be descaling
they could be descaling

Perfect

I could have descaled
you could have descaled
he could have descaled
we could have descaled
you could have descaled
they could have descaled

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I descale?
could you descale?
could he descale?
could we descale?
could you descale?
could they descale?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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