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| run into a brick wall (encounter something that makes it impossible to proceed: We were working on buying a house, but we ran into a brick wall when we couldn’t get a loan from the bank. Bullfinch); run into a blank wall (an impassable barricade or obstacle; a situation in which further progress is impossible: Attempts to get information by questioning the neighbors ran into a blank wall. Bullfinch) | |||
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| run on rocks; run upon rocks | |||