5 letter words:
brief10,
fiber10,
fibre10,
afire8,
feria8,
erbia7,
4 letter words:
barf9,
frab9,
frib9,
fair7,
fare7,
fear7,
fiar7,
fier7,
fire7,
frae7,
reif7,
rife7,
abri6,
bare6,
bear6,
bier6,
brae6,
brei6,
brie6,
rabi6,
riba6,
3 letter words:
fab8,
fib8,
arf6,
erf6,
fae6,
far6,
fer6,
fie6,
fir6,
fra6,
ref6,
rif6,
arb5,
bar5,
bra5,
reb5,
rib5,
air3,
are3,
ear3,
era3,
ire3,
rai3,
rei3,
ria3,
2 letter words:
ef5,
fa5,
fe5,
if5,
ab4,
ba4,
be4,
bi4,
ae2,
ai2,
ar2,
ea2,
er2,
re2,