I went back and checked the problem stated here http://www.unix.com/shell-programmin...#post302196106 .
, believe me it's different....

I have 3 matched fields out of 4, NOT one out of 4.
Here is another example.

SSSSS DDDDDDD 10:10:00 15:22:22
XXXXX AAAAAAA 00:00:11 00:02:11
XXXXX AAAAAAA 00:00:11 06:02:10
EEEEEE VVVVVVV 04:12:00 01:10:02
EEEEEE VVVVVVV 04:12:00 05:12:00
SSSSS DDDDDDD 10:10:00 13:23:21
EEEEEE FFFFFFFF 20:20:20 24:00:00

I want the output to be like

XXXXX AAAAAAA 00:00:11 06:02:10
EEEEEE VVVVVVV 04:12:00 05:12:00
SSSSS DDDDDDD 10:10:00 13:23:21
EEEEEE FFFFFFFF 20:20:20 24:00:00

If 2 lines are matched by 3 fields, I want to delete the first.

Thanks...