Letter on position 1 (m) changed: 8 words bels cels dels eels gels sels tels zels Letter on position 2 (e) changed: 3 words mals mils mols Letter on position 3 (l) changed: 8 words meds mees megs mems mess mets meus mews Letter on position 4 (s) changed: 4 words mela meld mell melt