7 letter words:
nelumbo11,
5 letter words:
blume9,
umbel9,
belon7,
boule7,
lemon7,
lumen7,
melon7,
noble7,
oleum7,
4 letter words:
numb8,
umbo8,
blue6,
bole6,
bone6,
ebon6,
lobe6,
lube6,
meno6,
menu6,
meou6,
mole6,
moue6,
mule6,
muon6,
neum6,
nome6,
omen6,
unbe6,
enol4,
leno4,
lone4,
lune4,
noel4,
3 letter words:
bum7,
mob7,
bel5,
ben5,
bun5,
elm5,
emu5,
lob5,
lum5,
mel5,
men5,
mol5,
mon5,
mun5,
neb5,
nob5,
nom5,
nub5,
obe5,
eon3,
leu3,
ole3,
one3,
2 letter words:
be4,
bo4,
em4,
me4,
mo4,
mu4,
om4,
um4,
el2,
en2,
lo2,
ne2,
no2,
nu2,
oe2,
on2,
un2,
