Letter on position 1 (p) changed: 10 words bere cere dere fere gere here lere mere sere were Letter on position 2 (e) changed: 4 words pare pore pure pyre Letter on position 3 (r) changed: 3 words peke pele pene Letter on position 4 (e) changed: 7 words peri perk perm pern perp pert perv