Letter on position 1 (s) changed: 8 words bels cels dels eels gels mels tels zels Letter on position 2 (e) changed: 2 words sals sols Letter on position 3 (l) changed: 12 words seas secs sees segs seis sens seps sers sess sets sews seys Letter on position 4 (s) changed: 4 words seld sele self sell