intransitive; transitive; transitive
| Infinitive | co-sign |
|---|---|
| 3rd person singular | co-signs |
| Past | co-signed |
| Past Participle | co-signed |
| Present Participle | co-signing |
intransitive; transitive; transitive
| Infinitive | co-sign |
|---|---|
| 3rd person singular | co-signs |
| Past | co-signed |
| Past Participle | co-signed |
| Present Participle | co-signing |