Once a suspect is removed, a new suspect is placed on the list.

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So,the researchers once again placed pieces of paper on several parked bicycles.

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Because the investors who once placed such high hopes on it are finally giving up.

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But for the workers, once placed, they had no chance of getting hired permanently, unless the agency was willing to pay a hefty fee.

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Mitnick was once placed in solitary confinement because prison officials were afraid he could turn his walkman into an FM transmitter that could be used to bug the wardens office.

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