There are two groups with different endings in the imperfect:
| -ar | -er/-ir | ||
| Yo | hablaba | comia | vivia |
| Tu | hablabas | comias | vivias |
| El, ella, usted | hablaba | comia | vivia |
| Nosotros | hablabamos | comiamos | viviamos |
| Ellos, ellas, ustedes | hablaban | comian | Vivian |
There are only three verbs with irregular forms:
| SER | IR | VER | |
| Yo | era | iba | veia |
| Tu | eras | ibas | veias |
| El, ella, usted | era | iba | veia |
| Nosotros | eramos | ibamos | veiamos |
| Ellos, ellas, usteds | eran | iban | veian |
Vivia en Costa Rica The English equivalents are:
(A) simple past I lived in Costa Rica
(B) past progressive I was living in Costa Rica
(C) “used to + infinitive construction” I used to live in Costa Rica