Dongdong made a cross with ten coins, counting five and six horizontally. Just move one coin, so there are six coins horizontally and vertically.

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Things like this,

Then put the top one in,

Reach the intersection of horizontal and vertical,

Is placed in the middle of the coin, figure:

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. . . . . The one in the middle is made up of two mules. )

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That's good,

Hope to adopt,