| I | require | |
|---|---|---|
| you | require | |
| he/she/it | requires | |
| we | require | |
| you | require | |
| they | require |
| I | required | |
|---|---|---|
| you | required | |
| he/she/it | required | |
| we | required | |
| you | required | |
| they | required |
| I | have | required | |
|---|---|---|---|
| you | have | required | |
| he/she/it | has | required | |
| we | have | required | |
| you | have | required | |
| they | have | required |
| I | had | required | |
|---|---|---|---|
| you | had | required | |
| he/she/it | had | required | |
| we | had | required | |
| you | had | required | |
| they | had | required |