Letter on position 1 (c) changed: 8 words bors dors hors jors kors mors tors vors Letter on position 2 (o) changed: 2 words cars curs Letter on position 3 (r) changed: 12 words cobs cods cogs cols coms cons coos cops coss cots cows coys Letter on position 4 (s) changed: 7 words cord core corf cork corm corn cory