| I | tower |
|---|---|
| you | tower |
| he/she/it | towers |
| we | tower |
| you | tower |
| they | tower |
| I | towered |
|---|---|
| you | towered |
| he/she/it | towered |
| we | towered |
| you | towered |
| they | towered |
| I | have | towered |
|---|---|---|
| you | have | towered |
| he/she/it | has | towered |
| we | have | towered |
| you | have | towered |
| they | have | towered |
| I | had | towered |
|---|---|---|
| you | had | towered |
| he/she/it | had | towered |
| we | had | towered |
| you | had | towered |
| they | had | towered |