5 letter words:
chemo12,
hence10,
4 letter words:
chon9,
eche9,
echo9,
heme9,
home9,
come8,
hone7,
cone6,
meno6,
neem6,
nome6,
omen6,
once6,
3 letter words:
heh9,
hem8,
mho8,
ohm8,
moc7,
hen6,
hoe6,
hon6,
noh6,
cee5,
con5,
eme5,
men5,
mon5,
nom5,
eon3,
nee3,
one3,
2 letter words:
hm7,
eh5,
he5,
ho5,
oh5,
em4,
me4,
mo4,
om4,
en2,
ne2,
no2,
oe2,
on2,