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male gender | Modal : no | may | might | can | could | shall | should | will | would | must | ought to

English verb conjugation COULD ATTEST

Regular verb: attest - attested - attested


Affirmation

Simple form
I could attest
you could attest
she could attest
we could attest
you could attest
they could attest
V-ing form
I could be attesting
you could be attesting
she could be attesting
we could be attesting
you could be attesting
they could be attesting
Perfect
I could have attested
you could have attested
she could have attested
we could have attested
you could have attested
they could have attested
V-ing perfect
I could have been attesting
you could have been attesting
she could have been attesting
we could have been attesting
you could have been attesting
they could have been attesting

Negation

Simple form
I couldn't attest
you couldn't attest
she couldn't attest
we couldn't attest
you couldn't attest
they couldn't attest
V-ing form
I couldn't be attesting
you couldn't be attesting
she couldn't be attesting
we couldn't be attesting
you couldn't be attesting
they couldn't be attesting
Perfect
I couldn't have attested
you couldn't have attested
she couldn't have attested
we couldn't have attested
you couldn't have attested
they couldn't have attested
V-ing perfect
I couldn't have been attesting
you couldn't have been attesting
she couldn't have been attesting
we couldn't have been attesting
you couldn't have been attesting
they couldn't have been attesting

Interrogative form

Simple form
could I attest?
could you attest?
could she attest?
could we attest?
could you attest?
could they attest?
V-ing form
could I be attesting?
could you be attesting?
could she be attesting?
could we be attesting?
could you be attesting?
could they be attesting?
Perfect
could I have attested?
could you have attested?
could she have attested?
could we have attested?
could you have attested?
could they have attested?
V-ing perfect
could I have been attesting?
could you have been attesting?
could she have been attesting?
could we have been attesting?
could you have been attesting?
could they have been attesting?

Interro-negative form

Simple form
couldn't I attest?
couldn't you attest?
couldn't she attest?
couldn't we attest?
couldn't you attest?
couldn't they attest?
V-ing form
couldn't I be attesting?
couldn't you be attesting?
couldn't she be attesting?
couldn't we be attesting?
couldn't you be attesting?
couldn't they be attesting?
Perfect
couldn't I have attested?
couldn't you have attested?
couldn't she have attested?
couldn't we have attested?
couldn't you have attested?
couldn't they have attested?
V-ing perfect
couldn't I have been attesting?
couldn't you have been attesting?
couldn't she have been attesting?
couldn't we have been attesting?
couldn't you have been attesting?
couldn't they have been attesting?