5 letter words:
fubar10,
aurar5,
4 letter words:
barf9,
frag8,
frug8,
afar7,
brag7,
burg7,
garb7,
grab7,
grub7,
bura6,
burr6,
agar5,
gaur5,
guar5,
raga5,
ruga5,
aura4,
3 letter words:
fab8,
fub8,
fag7,
fug7,
arf6,
bag6,
bug6,
far6,
fur6,
gab6,
aba5,
arb5,
baa5,
bar5,
bra5,
brr5,
bur5,
rub5,
urb5,
aga4,
gar4,
rag4,
rug4,
2 letter words:
fa5,
ab4,
ba4,
ag3,
aa2,
ar2,