| I | ulcerate |
|---|---|
| you | ulcerate |
| he/she/it | ulcerates |
| we | ulcerate |
| you | ulcerate |
| they | ulcerate |
| I | ulcerated |
|---|---|
| you | ulcerated |
| he/she/it | ulcerated |
| we | ulcerated |
| you | ulcerated |
| they | ulcerated |
| I | have | ulcerated |
|---|---|---|
| you | have | ulcerated |
| he/she/it | has | ulcerated |
| we | have | ulcerated |
| you | have | ulcerated |
| they | have | ulcerated |
| I | had | ulcerated |
|---|---|---|
| you | had | ulcerated |
| he/she/it | had | ulcerated |
| we | had | ulcerated |
| you | had | ulcerated |
| they | had | ulcerated |