# Google Sheets, 33 Bytes
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Anonymous worksheet function that takes input from cell `A1` and outputs to the calling cell

    =RegExReplace(A1,"(.)(.)\b","$2$1

-2 Bytes Thanks to [@KevinCruijssen](https://codegolf.stackexchange.com/users/52210/kevin-cruijssen) for the use of `(.)` over `(\w)`