sed pattern and delete line at 2nd or 3rd or 4th matching

[Nguyen Trung Hieu]

Hi all

Is there a SIMPLE METHOD for

sed pattern and delete line at 2nd or 3rd or 4th matching only

Example - test.txt
  111
222
      1111 <-- delete only this line. It is 2nd matching
333
        111 <-- or delete only this line. It is 3rd matching
444

Sorry but I'm searched over 2 days on the internet and no results as
expected

Thank you very much!