6 letter words:
rurban8,
5 letter words:
fubar10,
brung8,
furan8,
buran7,
unbar7,
urban7,
gnarr6,
4 letter words:
barf9,
fang8,
frag8,
frug8,
bang7,
brag7,
bung7,
burg7,
faun7,
garb7,
grab7,
grub7,
barn6,
bran6,
buna6,
bura6,
burn6,
burr6,
gaun5,
gaur5,
gnar5,
gran5,
guan5,
guar5,
rang5,
ruga5,
rung5,
3 letter words:
fab8,
fub8,
fag7,
fug7,
arf6,
bag6,
bug6,
fan6,
far6,
fun6,
fur6,
gab6,
arb5,
ban5,
bar5,
bra5,
brr5,
bun5,
bur5,
nab5,
nub5,
rub5,
urb5,
gan4,
gar4,
gnu4,
gun4,
nag4,
rag4,
rug4,
ran3,
run3,
urn3,
2 letter words:
fa5,
ab4,
ba4,
ag3,
an2,
ar2,
na2,
nu2,
un2,