6 letter words:
buffer14,
puffer14,
rebuff14,
prefab13,
upbear10,
5 letter words:
ruffe11,
fubar10,
feuar8,
pareu7,
perea7,
puree7,
rupee7,
4 letter words:
baff12,
buff12,
puff12,
raff10,
ruff10,
barf9,
beef9,
feeb9,
frap9,
beep8,
burp8,
fare7,
fear7,
fere7,
frae7,
free7,
reef7,
aper6,
bare6,
bear6,
beau6,
beer6,
brae6,
bree6,
bura6,
pare6,
pear6,
peer6,
pere6,
prau6,
pree6,
pure6,
rape6,
reap6,
rube6,
urea4,
3 letter words:
aff9,
eff9,
fab8,
fub8,
bap7,
pub7,
arf6,
far6,
fee6,
fer6,
feu6,
fur6,
ref6,
ape5,
arb5,
bar5,
bee5,
bra5,
bur5,
par5,
pea5,
pee5,
per5,
pur5,
rap5,
reb5,
rep5,
rub5,
urb5,
urp5,
are3,
ear3,
eau3,
era3,
ere3,
ree3,
rue3,
2 letter words:
ef5,
fa5,
fe5,
ab4,
ba4,
be4,
pa4,
pe4,
up4,
ae2,
ar2,
er2,
re2,