Letter on position 1 (c) changed: 13 words books dooks gooks hooks jooks kooks looks mooks nooks pooks rooks sooks zooks Letter on position 3 (o) changed: 4 words cocks conks corks cowks Letter on position 4 (k) changed: 6 words coofs cools cooms coons coops coots Letter on position 5 (s) changed: 1 word cooky