agrupabas

Agrupabas is the second-person singular imperfect indicative form of the Spanish verb agrupar, meaning you were grouping or you used to group. It is used to describe actions in the past that were habitual, ongoing, or repeatedly occurred when addressing someone in the informal tú form.

Formation and usage: agrupar is a regular -ar verb, and its imperfect endings are -aba, -abas, -aba, -ábamos, -abais, -aban. Therefore, agrupabas consists of the stem agrup- plus the ending -abas. This form places the action in a past frame without specifying its beginning or end, often accompanying other past-tense context in narration or description.

Examples:

- Cuando éramos niños, tú agrupabas las piezas por colores. (When we were kids, you used to group the pieces by color.)

- En la reunión, tú agrupabas a los participantes por departamentos antes de empezar. (In the meeting, you were grouping the participants by department before starting.)

Notes: Agrupabas corresponds to the imperfect tense and contrasts with agrupaste (the preterite, a completed past action) and with agrupaba, agrupabas, etc., in other persons. In standard Spanish, the form is tied to the pronoun tú; for third-person or formal you would use otras formas, such as agrupaba (él/ella/Usted) or agrupaban (ellos/ellas/Ustedes). As a regular -ar verb form, agrupabas follows the regular phonetic pattern without irregularities in the imperfect tense.