Letter on position 1 (m) changed: 15 words bos cos dos gos hos ios kos los nos oos pos sos wos yos zos Letter on position 2 (o) changed: 4 words mas mes mis mus Letter on position 3 (s) changed: 18 words moa mob moc mod moe mog moi mol mom mon moo mop mor mot mou mow moy moz