had been encountering
Past perfect progressiveconjugation ofencounter.There are other translations for this conjugation.

encounter

UNDP had reviewed the problems it had been encountering and had indicated that those problems should be resolved by the first half of 2006.
El PNUD había analizado los problemas que se habían planteado y había indicado que debían resolverse en el primer semestre de 2006.
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