habían descomprimido
-they/you had decompressed
Past perfectellos/ellas/ustedesconjugation ofdescomprimir.

descomprimir

Entonces, descubrimos que este software estaba compuesto de varios programas menores que ellos mismos se habían descomprimido.
We then discovered that this software was made up of several smaller programs which had unzipped themselves.
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