Real time usage of illegal and ignore bins

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please explain with example for the below Queries:
At what scenario(real time) we can use Ignore bins
At what scenario(real time) we can use illegal bins

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In reply to Subbi Reddy:

https://verificationacademy.com/forums/systemverilog/why-ignore-bins#reply-85280

https://verificationacademy.com/forums/systemverilog/what-difference-between-ignore-bins-and-illegal-bins.#reply-70584

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In reply to dave_59:

In reply to Subbi Reddy:
Why Ignore bins - SystemVerilog - Verification Academy
What is difference between ignore bins and illegal bins - SystemVerilog - Verification Academy

I got it clear idea on ignore bins with example.
concept wise i got it what illegal bins will do but i didn’t got it real time example. please give me one real time example on illegal bins

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In reply to Subbi Reddy:

The only thing you should remember about illegal_bins is not to use them.