6 letter words:
bunnet8,
unbent8,
untent6,
untune6,
5 letter words:
butte7,
butut7,
4 letter words:
zebu15,
bent6,
bunn6,
bunt6,
bute6,
butt6,
tube6,
unbe6,
nett4,
tent4,
tune4,
tutu4,
3 letter words:
bez14,
ben5,
bet5,
bun5,
but5,
neb5,
nub5,
tub5,
net3,
nun3,
nut3,
ten3,
tet3,
tun3,
tut3,
ute3,
utu3,
2 letter words:
be4,
en2,
et2,
ne2,
nu2,
te2,
un2,
ut2,