5 letter words:
wroot8,
robot7,
4 letter words:
bowr9,
brow9,
rowt7,
trow7,
woot7,
wort7,
boor6,
boot6,
bort6,
broo6,
root4,
roto4,
toro4,
3 letter words:
bow8,
owt6,
row6,
tow6,
two6,
woo6,
wot6,
boo5,
bor5,
bot5,
bro5,
obo5,
orb5,
rob5,
oor3,
oot3,
ort3,
roo3,
rot3,
too3,
tor3,
2 letter words:
ow5,
wo5,
bo4,
ob4,
oo2,
or2,
to2,