English verb conjugation COULD BUTTRESS

Regular verb: buttress - buttressed - buttressed

Affirmation

Simple form

I could buttress
you could buttress
she could buttress
we could buttress
you could buttress
they could buttress

V-ing form

I could be buttressing
you could be buttressing
she could be buttressing
we could be buttressing
you could be buttressing
they could be buttressing

Perfect

I could have buttressed
you could have buttressed
she could have buttressed
we could have buttressed
you could have buttressed
they could have buttressed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I buttress?
could you buttress?
could she buttress?
could we buttress?
could you buttress?
could they buttress?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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