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Last name Grushchak (Грущак
, Grushchak
) , in the entire world, is a rare cognomen. The last name Grushchak is habitual in Ukraine, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Russia, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Грущак | Kazakhstan, Kyrgyzstan, Russia, Ukraine |
| Grushchak | United States |