4 letter words:
keck14,
kick14,
feck13,
fuck13,
keek12,
kike12,
fike11,
keef11,
kief11,
kufi11,
cuke10,
cuif9,
fice9,
fuci9,
3 letter words:
kef10,
kif10,
ick9,
eek7,
eik7,
eke7,
euk7,
kue7,
uke7,
fee6,
feu6,
fie6,
cee5,
cue5,
ecu5,
ice5,
2 letter words:
ki6,
ef5,
fe5,
if5,
ee2,