7 letter words:
runback15,
6 letter words:
buckra14,
5 letter words:
brank11,
burka11,
crank11,
knaur9,
buran7,
unbar7,
urban7,
4 letter words:
back12,
buck12,
bank10,
bark10,
bunk10,
cark10,
kbar10,
rack10,
ruck10,
carb8,
crab8,
curb8,
karn8,
knar8,
knur8,
kuna8,
nark8,
raku8,
rank8,
barn6,
bran6,
buna6,
bura6,
burn6,
carn6,
curn6,
narc6,
3 letter words:
kab9,
ark7,
auk7,
cab7,
cub7,
arb5,
arc5,
ban5,
bar5,
bra5,
bun5,
bur5,
can5,
car5,
cru5,
cur5,
nab5,
nub5,
rub5,
urb5,
ran3,
run3,
urn3,
2 letter words:
ka6,
ab4,
ba4,
an2,
ar2,
na2,
nu2,
un2,
