(Repetition of Patterns (\{n\}))

% vi textfile

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     Unusual occurrences happened at the fair.

      Patty won fourth place in the 50 yard dash square and fair.

      Occurences like this are rare.

-->The winning ticket is 55222.

      The ticket I got is 54333 and Dee got 55544.

      Guy fell down while running around the south bend in his last event.

1./5\(2\)2\{3\}\./

   说明

    1 在每一行中寻找这样的字符串:首先是2个5,紧跟着3个2,最后是一个点(.)。