Hi And welcome here! com/dictionary/between dictionary says: usage There is a persistent but unfounded notion that between can be used only of two items and that among must be used for more than two. Between has been used of more than two since Old English; it is especially appropriate to denote a one-to-one relationship, regardless of the number of items.
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TanitHowever you might probably be more interested in what M-W calls "persisted but unfounded notion",
PhilipI'm not sure how unfounded I am, but I am persistent.I wish I were as unfounded and persistent as you!