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CORE WORDS










TOPIK ☆ Something which is hard to solve and troublesome.
HEADACHE PIEDRA EN EL ZAPATO, DOLOR DE CABEZA, FASTIDIO TRACAS, SOUCI, TOURMENT:
难题，让人头疼的事 ずつうのたね【頭痛の種】 골칫거리 việc phiền toái