Possible Results:
había taponado
-I had blocked
Past perfect yo conjugation of taponar.
había taponado
-he/she/you had blocked
Past perfect él/ella/usted conjugation of taponar.

taponar

El sumidero de la cocina se había taponado y tuvimos que usar un desatascador.
The kitchen drain had got blocked and we had to use a plunger.
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