English verb conjugation COULD CLACK

Regular verb: clack - clacked - clacked

Affirmation

Simple form

I could clack
you could clack
she could clack
we could clack
you could clack
they could clack

V-ing form

I could be clacking
you could be clacking
she could be clacking
we could be clacking
you could be clacking
they could be clacking

Perfect

I could have clacked
you could have clacked
she could have clacked
we could have clacked
you could have clacked
they could have clacked

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I clack?
could you clack?
could she clack?
could we clack?
could you clack?
could they clack?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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