I could attest you could attest he could attest we could attest you could attest they could attest
Forma con V-ing
I could be attesting you could be attesting he could be attesting we could be attesting you could be attesting they could be attesting
Perfetto
I could have attested you could have attested he could have attested we could have attested you could have attested they could have attested
Perfetto con V-ing
I could have been attesting you could have been attesting he could have been attesting we could have been attesting you could have been attesting they could have been attesting
Negazione
Forma semplice
I couldn't attest you couldn't attest he couldn't attest we couldn't attest you couldn't attest they couldn't attest
Forma con V-ing
I couldn't be attesting you couldn't be attesting he couldn't be attesting we couldn't be attesting you couldn't be attesting they couldn't be attesting
Perfetto
I couldn't have attested you couldn't have attested he couldn't have attested we couldn't have attested you couldn't have attested they couldn't have attested
Perfetto con V-ing
I couldn't have been attesting you couldn't have been attesting he couldn't have been attesting we couldn't have been attesting you couldn't have been attesting they couldn't have been attesting
Forma interrogativa
Forma semplice
could I attest? could you attest? could he attest? could we attest? could you attest? could they attest?
Forma con V-ing
could I be attesting? could you be attesting? could he be attesting? could we be attesting? could you be attesting? could they be attesting?
Perfetto
could I have attested? could you have attested? could he have attested? could we have attested? could you have attested? could they have attested?
Perfetto con V-ing
could I have been attesting? could you have been attesting? could he have been attesting? could we have been attesting? could you have been attesting? could they have been attesting?
Forma interro-negativa
Forma semplice
couldn't I attest? couldn't you attest? couldn't he attest? couldn't we attest? couldn't you attest? couldn't they attest?
Forma con V-ing
couldn't I be attesting? couldn't you be attesting? couldn't he be attesting? couldn't we be attesting? couldn't you be attesting? couldn't they be attesting?
Perfetto
couldn't I have attested? couldn't you have attested? couldn't he have attested? couldn't we have attested? couldn't you have attested? couldn't they have attested?
Perfetto con V-ing
couldn't I have been attesting? couldn't you have been attesting? couldn't he have been attesting? couldn't we have been attesting? couldn't you have been attesting? couldn't they have been attesting?