6 letter words:
forbid12,
5 letter words:
frock14,
brick13,
brock13,
boric9,
fiord9,
4 letter words:
bock12,
dick11,
dock11,
fork11,
birk10,
bork10,
cork10,
rick10,
rock10,
coif9,
corf9,
dirk9,
dork9,
fico9,
foci9,
forb9,
crib8,
fido8,
ford8,
bird7,
cord7,
drib7,
odic7,
biro6,
brio6,
coir6,
3 letter words:
kif10,
ick9,
kob9,
fib8,
fob8,
kid8,
cob7,
dif7,
fid7,
irk7,
kir7,
koi7,
kor7,
bid6,
bod6,
cod6,
dib6,
doc6,
fir6,
for6,
fro6,
rif6,
bio5,
bro5,
cor5,
obi5,
orb5,
orc5,
rib5,
rob5,
roc5,
dor4,
rid4,
rod4,
2 letter words:
ki6,
if5,
of5,
bi4,
bo4,
do3,
id3,
od3,
oi2,
or2,