7 letter words:
forbids13,
6 letter words:
forbid12,
fibros11,
rosbif11,
fiords10,
5 letter words:
fibro10,
forbs10,
fribs10,
fidos9,
fiord9,
foids9,
fords9,
birds8,
bords8,
brods8,
dorbs8,
dribs8,
biros7,
brios7,
doris6,
4 letter words:
fibs9,
fobs9,
forb9,
frib9,
difs8,
fido8,
fids8,
foid8,
ford8,
bids7,
bird7,
bods7,
bord7,
brod7,
dibs7,
dobs7,
dorb7,
drib7,
firs7,
fris7,
fros7,
orfs7,
rifs7,
bios6,
biro6,
bois6,
bors6,
brio6,
bris6,
bros6,
obis6,
orbs6,
ribs6,
robs6,
sorb6,
dors5,
ords5,
rids5,
rods5,
sord5,
sori4,
3 letter words:
fib8,
fob8,
dif7,
dof7,
fid7,
bid6,
bod6,
dib6,
dob6,
fir6,
for6,
fro6,
ifs6,
orf6,
rif6,
sif6,
bio5,
bis5,
boi5,
bor5,
bos5,
bro5,
obi5,
obs5,
orb5,
rib5,
rob5,
sib5,
sob5,
dis4,
dor4,
dos4,
dso4,
ids4,
ods4,
ord4,
rid4,
rod4,
sod4,
ios3,
iso3,
ors3,
sir3,
sri3,
2 letter words:
if5,
of5,
bi4,
bo4,
ob4,
di3,
do3,
id3,
od3,
io2,
is2,
oi2,
or2,
os2,
si2,
so2,