7 letter words
BOURBON​11
5 letter words
BORON​7
BOURN​7
BUROO​7
4 letter words (13 words)
BORN​6
BURN​6
BOOB​8
BOON​6
BOBO​8
NOOB​6
BOOR​6
BUBO​8
ROON​4
BURB​8
BOUN​6
BROO​6
OURN​4
3 letter words (26 words)
OUR​3
RUN​3
BOB​7
NOR​3
ROB​5
BON​5
RUB​5
BUR​5
BOO​5
BRO​5
ORB​5
URN​3
NUR​3
BUN​5
ONO​3
ROO​3
BOR​5
OBO​5
NOB​5
URB​5
2 letter words (10 words)
ON​2
OR​2
NO​2
UN​2
OO​2
UR​2
NU​2
OU​2
BO​4
OB​4