5 letter words:
cache12,
chace12,
chica12,
4 letter words:
exec13,
chic11,
ache9,
chai9,
chia9,
each9,
eche9,
eech9,
ceca8,
ecce8,
3 letter words:
hex13,
axe10,
ach8,
cha8,
che8,
chi8,
ech8,
hic8,
ich8,
ahi6,
hae6,
hie6,
ace5,
cee5,
ice5,
2 letter words:
ax9,
ex9,
xi9,
ch7,
ah5,
eh5,
ha5,
he5,
hi5,
ae2,
ai2,
ea2,
ee2,