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2Significado: naturecave cavern cove burrow denhole hovel shelter tunnel
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3Significado: cavecavern cove hole dentunnel hovel shelter burrow
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4Significado: dig outdig excavate burrow minetunnel bore undermine
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5Significado: subterraneousburied covered tunnel mine underground
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6Significado: drillpenetrate pierce perforate tunnel bore
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7Significado: passageduct well pipetube tunnel shaft
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8Significado: hole in the groundhole cavity pit minehollow quarry tunnel excavation
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9Significado: placecave cavern cove burrow dentunnel hovel shelter hole