Just to be clear.
Sheet1 column A is the list of parents
Sheet1 column B is the list of children
Good children have only one parent.
You want to identify bad children and any child who has a bad sibling.
Siblings with different "only Eng" entires are a separate way to be not-completely-good
Is that the case.
(I can't work on this until this afternoon after work, but it sounds like a fun problem)
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