English verb conjugation COULD INVENT

Regular verb: invent - invented - invented

Affirmation

Simple form

I could invent
you could invent
she could invent
we could invent
you could invent
they could invent

V-ing form

I could be inventing
you could be inventing
she could be inventing
we could be inventing
you could be inventing
they could be inventing

Perfect

I could have invented
you could have invented
she could have invented
we could have invented
you could have invented
they could have invented

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I invent?
could you invent?
could she invent?
could we invent?
could you invent?
could they invent?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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