What does 1 Chronicles 6:58 mean?

to them they gave Hebron in the land of Judah, and its suburbs around it;

but the fields of the city, and its villages, they gave to Caleb the son of Jephunneh.

To the sons of Aaron they gave the cities of refuge, Hebron; Libnah also with its suburbs, Jattir, Eshtemoa with its suburbs,

Ashan with its suburbs, and Beth Shemesh with its suburbs;

and out of the tribe of Benjamin, Geba with its suburbs, Allemeth with its suburbs, and Anathoth with its suburbs. All their cities throughout their families were thirteen cities.

To the rest of the sons of Kohath were given by lot, out of the family of the tribe, out of the half-tribe, the half of Manasseh, ten cities.