Color Key
| Regular | Irregular |
| Ortho. Change | Not Used |
operar
to run, to manage, to operate; to operate on
Imperfect Subjunctive / Imperfecto de Subjuntivo – Version 1
| yo | operara |
| tú | operaras |
| él / Ud. | operara |
| nosotros | operáramos |
| vosotros | operarais |
| ellos / Uds. | operaran |
Imperfect Subjunctive / Imperfecto de Subjuntivo – Version 2
| yo | operase |
| tú | operases |
| él / Ud. | operase |
| nosotros | operásemos |
| vosotros | operaseis |
| ellos / Uds. | operasen |