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English -ium (mention)
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Asturian fierro (inherited)
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Asturian ferrar (inherited)
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Catalan ferro (inherited)
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Catalan ferri (mention)
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Catalan ferrar (inherited)
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Dalmatian fiar (inherited)
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Emilian fèr (inherited)
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Esperanto fero (borrowed)
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Spanish -io (mention)
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Spanish hierro (inherited)
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Spanish fierro (inherited)
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French fer (inherited)
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Old French fer (inherited)
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Friulian fiΓͺr (inherited)
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Galician ferro (inherited)
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Italian ferro (inherited)