As Bill Kurtis, a longtime Chicago news anchor, began calling out numbers, the players let out a combination of groans and yelps as they used kiddie animal stampers to mark their sheets.

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Consequently, balance sheets under mark to market accounting suddenly started to show insolvency, or near insolvency, for more and more institutions.

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The UKFPO announced on Tuesday that it had discovered "a potential error in the scanning process of the situational judgement test" and promised to manually re-mark all the affected sheets within a week.

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