9 letter words:
ubiquitin20,
5 letter words:
qubit16,
quint14,
binit7,
4 letter words:
quin13,
quit13,
bint6,
bunt6,
inti4,
unit4,
3 letter words:
bin5,
bit5,
bun5,
but5,
nib5,
nub5,
tub5,
nit3,
nut3,
tin3,
tui3,
tun3,
uni3,
utu3,
2 letter words:
qi11,
bi4,
in2,
it2,
nu2,
ti2,
un2,
ut2,