Judges 1:28-30
28 When Israel became strong, they pressed the Canaanites into forced labor but never drove them out completely.
29 Nor did Ephraim drive out the Canaanites living in Gezer, but the Canaanites continued to live there among them.
30 Neither did Zebulun drive out the Canaanites living in Kitron or Nahalol, who remained among them; but they did subject them to forced labor.