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OT: a problem about text manipulation



Dear All

I have a text file with more than 300000 of lines like the following:

1	E	E	E
2	C	D	
3	B	E	D
4	C	E	D
5		D	E

I am looking for an automatic way of transforming my text file into
another one with the format

1	E
1	E
1	E
2	C
2	C
3	B
3	B
3	D
4	C
4	C
4	D
5	E

Any ideas?

Thanks in advance,

Paul


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