Letter on position 1 (c) changed: 13 words dons eons fons gons hons ions kons mons oons pons sons tons wons Letter on position 2 (o) changed: 2 words cans cens Letter on position 3 (n) changed: 12 words cobs cods cogs cols coms coos cops cors coss cots cows coys Letter on position 4 (s) changed: 7 words cond cone conf coni conk conn cony