5 letter words:
burka11,
rumba9,
umbra9,
4 letter words:
bark10,
bauk10,
brak10,
burk10,
kbar10,
krab10,
mark10,
murk10,
barm8,
raku8,
arum6,
baur6,
bura6,
mura6,
3 letter words:
kab9,
kam9,
mak9,
ark7,
auk7,
bam7,
bum7,
amu5,
arb5,
arm5,
bar5,
bra5,
bru5,
bur5,
mar5,
ram5,
rub5,
rum5,
urb5,
2 letter words:
ka6,
ab4,
am4,
ba4,
ma4,
mu4,
um4,
ar2,
ur2,