4 letter words:
zupa15,
bapu8,
barp8,
burp8,
baur6,
bura6,
burr6,
parr6,
prau6,
purr6,
rurp6,
3 letter words:
zap14,
bap7,
pub7,
arb5,
bar5,
bra5,
brr5,
bru5,
bur5,
par5,
pur5,
rap5,
rub5,
urb5,
urp5,
2 letter words:
za11,
ab4,
ba4,
pa4,
up4,
ar2,
ur2,