4 letter words:
boho9,
booh9,
bowr9,
brow9,
hobo9,
boor6,
broo6,
3 letter words:
how9,
who9,
boh8,
bow8,
hob8,
hoo6,
oho6,
ooh6,
rho6,
row6,
woo6,
boo5,
bor5,
bro5,
obo5,
orb5,
rob5,
oor3,
roo3,
2 letter words:
ho5,
oh5,
ow5,
wo5,
bo4,
ob4,
oo2,
or2,