Letter on position 1 (h) changed: 9 words barns carns darns earns karns larns tarns warns yarns Letter on position 2 (a) changed: 2 words herns horns Letter on position 3 (r) changed: 1 word hains Letter on position 4 (n) changed: 8 words hards hares harks harls harms haros harps harts