5 letter words:
brief10,
fiber10,
fibre10,
fubar10,
afire8,
feria8,
feuar8,
erbia7,
rubai7,
urbia7,
aurei5,
uraei5,
4 letter words:
barf9,
frab9,
frib9,
fair7,
fare7,
faur7,
fear7,
fiar7,
fier7,
fire7,
frae7,
frau7,
reif7,
rife7,
abri6,
bare6,
baur6,
bear6,
beau6,
bier6,
brae6,
brei6,
brie6,
bura6,
rabi6,
riba6,
rube6,
iure4,
urea4,
3 letter words:
fab8,
fib8,
fub8,
arf6,
auf6,
erf6,
fae6,
far6,
fer6,
feu6,
fie6,
fir6,
fra6,
fur6,
ref6,
rif6,
arb5,
bar5,
bra5,
bru5,
bur5,
reb5,
rib5,
rub5,
urb5,
air3,
are3,
aue3,
ear3,
eau3,
era3,
ire3,
rai3,
rei3,
ria3,
rue3,
ure3,
2 letter words:
ef5,
fa5,
fe5,
if5,
ab4,
ba4,
be4,
bi4,
ae2,
ai2,
ar2,
ea2,
er2,
re2,
ur2,