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1202.Text file parser -- How to extract all lines in which first 2 columns are identical?

User: Chao Tan -- 2014-05-05          << 1201  1203 >>
Hits: 1255
Type: Text file parser   
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In the text,there were 2 IDs for each line in the head.I want to compare two id of the same line and reserve the line that have two same id(or just delete line with two different id).

Thank you for your help and sorry for troubling you.
Input Sample:
TU1 TU1 100.00 99
TU1 TU765 100.00 380
TU2 TU2 100.00 172
TU4 TU4 100.00 198
TU5 TU5 99.38 650
TU5 TU6 100.00 146
TU5 TU49988 91.48 176
Output Sample:
TU1 TU1 100.00 99
TU2 TU2 100.00 172
TU4 TU4 100.00 198
TU5 TU5 99.38 650
Hint: You need to Download and install "Replace Pioneer" on windows platform to finish following steps.
1. ctrl-o open text file
2. ctrl-h open 'replace' dialogue
* set 'replace unit' to 'Line'
* set 'search for pattern' to:

* set 'replace with pattern' to:

* uncheck option of 'print unmatched unit'
3. click 'replace', done.

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Check Demo of Text file parser
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