5 letter words:
books11,
kobos11,
boobs9,
4 letter words:
woks11,
book10,
bosk10,
kobo10,
kobs10,
bows9,
swob9,
bobs8,
boob8,
sook8,
woos7,
boos6,
3 letter words:
wok10,
kob9,
bow8,
bob7,
kos7,
sow6,
woo6,
wos6,
boo5,
bos5,
sob5,
2 letter words:
ow5,
wo5,
bo4,
os2,
so2,