Context-Free Grammar (CFG) Example: {a^i b^j c^k : i != j}

thanks for your videos ! i will passs tomorrow my exam thanks to you , could you please do a video or write me in the comment what would be possible grammar for a^i b^j c^k where k is always < or equal to max(a,b) ?
i m very confused how i should do that

ur videos r awesomeee ty for uploading them

What if there's another condition where j is not equal to k? So it's {i != j or j != k}

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