Conjugation and declension of "co-author" in English
Conjugation of the verb co-author,
regular 
Indicative
Present Indefinite
Present Continuous
Present Perfect
Present Perfect Continuous
Past Indefinite
Past Continuous
Past Perfect
Past Perfect Continuous
Future Indefinite
Future Continuous
Future Perfect
Future Perfect Continuous
Indicative
Present Indefinite
I don't co-authoryou don't co-author
he/she/it doesn't co-author
we don't co-author
you don't co-author
they don't co-author
Present Continuous
I am not co-authoringyou aren't co-authoring
he/she/it isn't co-authoring
we aren't co-authoring
you aren't co-authoring
they aren't co-authoring
Present Perfect
I haven't co-authoredyou haven't co-authored
he/she/it hasn't co-authored
we haven't co-authored
you haven't co-authored
they haven't co-authored
Present Perfect Continuous
I haven't been co-authoringyou haven't been co-authoring
he/she/it hasn't been co-authoring
we haven't been co-authoring
you haven't been co-authoring
they haven't been co-authoring
Past Indefinite
I didn't co-authoryou didn't co-author
he/she/it didn't co-author
we didn't co-author
you didn't co-author
they didn't co-author
Past Continuous
I wasn't co-authoringyou weren't co-authoring
he/she/it wasn't co-authoring
we weren't co-authoring
you weren't co-authoring
they weren't co-authoring
Past Perfect
I hadn't co-authoredyou hadn't co-authored
he/she/it hadn't co-authored
we hadn't co-authored
you hadn't co-authored
they hadn't co-authored
Past Perfect Continuous
I hadn't been co-authoringyou hadn't been co-authoring
he/she/it hadn't been co-authoring
we hadn't been co-authoring
you hadn't been co-authoring
they hadn't been co-authoring
Future Indefinite
I shan't / won't co-authoryou won't co-author
he/she/it won't co-author
we shan't / won't co-author
you won't co-author
they won't co-author
Future Continuous
I shan't / won't be co-authoringyou won't be co-authoring
he/she/it won't be co-authoring
we shan't / won't be co-authoring
you won't be co-authoring
they won't be co-authoring
Future Perfect
I shan't / won't have co-authoredyou won't have co-authored
he/she/it won't have co-authored
we shan't / won't have co-authored
you won't have co-authored
they won't have co-authored
Future Perfect Continuous
I shan't / won't have been co-authoringyou won't have been co-authoring
he/she/it won't have been co-authoring
we shan't / won't have been co-authoring
you won't have been co-authoring
they won't have been co-authoring
Conditional
Conditional Present
Conditional Present Continuous
Conditional Perfect
Conditional Perfect Continuous
Conditional
Conditional Present
I wouldn't co-authoryou wouldn't co-author
he/she/it wouldn't co-author
we wouldn't co-author
you wouldn't co-author
they wouldn't co-author
Conditional Present Continuous
I wouldn't be co-authoringyou wouldn't be co-authoring
he/she/it wouldn't be co-authoring
we wouldn't be co-authoring
you wouldn't be co-authoring
they wouldn't be co-authoring
Conditional Perfect
I wouldn't have co-authoredyou wouldn't have co-authored
he/she/it wouldn't have co-authored
we wouldn't have co-authored
you wouldn't have co-authored
they wouldn't have co-authored
Conditional Perfect Continuous
I wouldn't have been co-authoringyou wouldn't have been co-authoring
he/she/it wouldn't have been co-authoring
we wouldn't have been co-authoring
you wouldn't have been co-authoring
they wouldn't have been co-authoring
Participles
Present
Past
Infinitives
Infinitives
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