7 letter words:
biffers15,
griffes14,
6 letter words:
biffer14,
griffe13,
griffs13,
fifers12,
briefs11,
fibers11,
fibres11,
friges10,
griefs10,
gibers9,
5 letter words:
biffs13,
griff12,
fiefs11,
fifer11,
fifes11,
riffs11,
brief10,
fiber10,
fibre10,
fribs10,
frigs9,
grief9,
bergs8,
brigs8,
fiers8,
fires8,
fries8,
frise8,
giber8,
gibes8,
reifs8,
serif8,
biers7,
birse7,
breis7,
bries7,
brise7,
ribes7,
grise6,
4 letter words:
biff12,
effs10,
fief10,
fife10,
riff10,
fibs9,
frib9,
fegs8,
figs8,
frig8,
begs7,
berg7,
bigs7,
brig7,
feis7,
fier7,
fire7,
firs7,
fris7,
gibe7,
gibs7,
refs7,
reif7,
rife7,
rifs7,
seif7,
serf7,
bier6,
bise6,
brei6,
brie6,
bris6,
rebs6,
ribs6,
egis5,
ergs5,
gies5,
gris5,
regs5,
rigs5,
ires4,
reis4,
rise4,
seir4,
sire4,
3 letter words:
eff9,
iff9,
fib8,
feg7,
fig7,
gif7,
beg6,
big6,
efs6,
erf6,
fer6,
fes6,
fie6,
fir6,
gib6,
ifs6,
ref6,
rif6,
sif6,
bes5,
bis5,
reb5,
rib5,
sib5,
erg4,
gie4,
gis4,
reg4,
rig4,
seg4,
ers3,
ire3,
rei3,
res3,
sei3,
ser3,
sir3,
sri3,
2 letter words:
ef5,
fe5,
if5,
be4,
bi4,
gi3,
er2,
es2,
is2,
re2,
si2,