| I | co-author | |
|---|---|---|
| you | co-author | |
| he/she/it | co-authors | |
| we | co-author | |
| you | co-author | |
| they | co-author |
| I | co-authored | |
|---|---|---|
| you | co-authored | |
| he/she/it | co-authored | |
| we | co-authored | |
| you | co-authored | |
| they | co-authored |
| I | have | covauthored | |
|---|---|---|---|
| you | have | covauthored | |
| he/she/it | has | covauthored | |
| we | have | covauthored | |
| you | have | covauthored | |
| they | have | covauthored |
| I | had | covauthored | |
|---|---|---|---|
| you | had | covauthored | |
| he/she/it | had | covauthored | |
| we | had | covauthored | |
| you | had | covauthored | |
| they | had | covauthored |