8 letter words:
checkoff25,
5 letter words:
check16,
chock16,
choke14,
4 letter words:
feck13,
heck13,
hock13,
chef12,
cock12,
coff12,
hoke11,
okeh11,
coke10,
echo9,
3 letter words:
kef10,
eff9,
feh9,
foh9,
off9,
oke7,
foe6,
hoe6,
2 letter words:
ef5,
eh5,
fe5,
he5,
ho5,
of5,
oh5,
oe2,