English verb conjugation COULD CAUSE

Regular verb: cause - caused - caused

Affirmation

Simple form

I could cause
you could cause
she could cause
we could cause
you could cause
they could cause

V-ing form

I could be causing
you could be causing
she could be causing
we could be causing
you could be causing
they could be causing

Perfect

I could have caused
you could have caused
she could have caused
we could have caused
you could have caused
they could have caused

V-ing perfect

I could have been causing
you could have been causing
she could have been causing
we could have been causing
you could have been causing
they could have been causing

Negation

Simple form

I couldn't cause
you couldn't cause
she couldn't cause
we couldn't cause
you couldn't cause
they couldn't cause

V-ing form

I couldn't be causing
you couldn't be causing
she couldn't be causing
we couldn't be causing
you couldn't be causing
they couldn't be causing

Perfect

I couldn't have caused
you couldn't have caused
she couldn't have caused
we couldn't have caused
you couldn't have caused
they couldn't have caused

V-ing perfect

I couldn't have been causing
you couldn't have been causing
she couldn't have been causing
we couldn't have been causing
you couldn't have been causing
they couldn't have been causing

Interrogative form

Simple form

could I cause?
could you cause?
could she cause?
could we cause?
could you cause?
could they cause?

V-ing form

could I be causing?
could you be causing?
could she be causing?
could we be causing?
could you be causing?
could they be causing?

Perfect

could I have caused?
could you have caused?
could she have caused?
could we have caused?
could you have caused?
could they have caused?

V-ing perfect

could I have been causing?
could you have been causing?
could she have been causing?
could we have been causing?
could you have been causing?
could they have been causing?

Interro-negative form

Simple form

couldn't I cause?
couldn't you cause?
couldn't she cause?
couldn't we cause?
couldn't you cause?
couldn't they cause?

V-ing form

couldn't I be causing?
couldn't you be causing?
couldn't she be causing?
couldn't we be causing?
couldn't you be causing?
couldn't they be causing?

Perfect

couldn't I have caused?
couldn't you have caused?
couldn't she have caused?
couldn't we have caused?
couldn't you have caused?
couldn't they have caused?

V-ing perfect

couldn't I have been causing?
couldn't you have been causing?
couldn't she have been causing?
couldn't we have been causing?
couldn't you have been causing?
couldn't they have been causing?

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