Letter on position 1 (s) changed: 16 words bays cays days fays gays hays jays kays lays mays nays pays rays tays ways yays Letter on position 2 (a) changed: 2 words seys soys Letter on position 3 (y) changed: 13 words sabs sacs sads sags sais sals sams sans saps sars sass savs saws