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Need help with a regular expression

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Last Modified: 2015-01-02
i need to parse some text and replace some stuff and i think regular expressions is the best way to go.

i need to find the following strings

A)  ",, , ," which is a comma + comma = space + comma + space = Comma
B)  ",,|"
c)  "2014-06-17 13:00:42,, , ," the date could always change


also is there a quick way to find with regular expression the following scenario wher there is always a 4 CHAR string
followed by 2 commas and i would like to change it to string and 1 comma like from "MB01,," to "MB01,"
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