5 letter words:
check16,
chock16,
choke14,
4 letter words:
feck13,
heck13,
hock13,
chef12,
cock12,
hech12,
choc11,
coch11,
hoke11,
okeh11,
coke10,
echo9,
oche9,
ecco8,
3 letter words:
kef10,
feh9,
foh9,
heh9,
hoh9,
che8,
ech8,
hoc8,
och8,
oke7,
foe6,
hoe6,
eco5,
2 letter words:
ch7,
ko6,
ef5,
eh5,
fe5,
he5,
ho5,
of5,
oh5,
oe2,