Letter on position 1 (s) changed: 16 words bay cay day fay gay hay jay kay lay may nay pay ray tay way yay Letter on position 2 (a) changed: 9 words sey shy sky sly sny soy spy sty swy Letter on position 3 (y) changed: 17 words sab sac sad sae sag sai sal sam san sap sar sat sau sav saw sax saz