195. The compound tense made by combining the past passive participle
with the past tense of the verb "esti" expresses an act or condition
which "had been undergone" by the subject of the verb at some point in
past time. It is called the "pluperfect passive tense". The conjugation
of "vidi" in this tense is as follows:
mi estis vidita, I had been seen (I was having-been-seen).
vi estis vidita, you had been seen.
li (sxi, gxi) estis vidita, he (she, it) had been seen.
ni estis viditaj, we had been seen.
vi estis viditaj, you had been seen.
ili estis viditaj, they had been seen.