The DNA project is dedicated to exploring Eastern European surnames beginning with Achk / Ochk, such as: Achkas, Achkasov, Ochkas, Ochkasov, Očkáš, Ócskás, Oczko, Oczkoś, Oczkowicz and Oczkowski. The current result of the study of surnames is described in the following article: https://sites.google.com/view/ochkas/dna-eng