How to grep similiar values one by one under each other?

I Have grep from file output like:

2531 POKRZYWNIAK KRZYSZTOF 244 18/01 2 13:46 23:26
3346 SOROTA DARIUSZ 244 18/01 1 04:05 13:46

Need to get it look like this:

2531 POKRZYWNIAK KRZYSZTOF 244 18/01 2 13:46 23:26
3346 SOROTA DARIUSZ        244 18/01 1 04:05 13:46

I'm using cat filename.txt | grep -w $criteria

I'm also using grep with -i for case insensitive.



Read more here: https://stackoverflow.com/questions/65077642/how-to-grep-similiar-values-one-by-one-under-each-other

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