Color Key
| Regular | Irregular |
| Ortho. Change | Not Used |
penetrar
to enter, to penetrate, to go into
Imperative (Command) / Imperativo
| yo | — — — |
| tú | penetra |
| él / Ud. | penetre |
| nosotros | penetremos |
| vosotros | penetrad |
| ellos / Uds. | penetren |
Negative Imperative (Command) / Imperativo Negativo
| yo | — — — |
| tú | no penetres |
| él / Ud. | no penetre |
| nosotros | no penetremos |
| vosotros | no penetréis |
| ellos / Uds. | no penetren |