7 letter words:
befleck18,
5 letter words:
fleck14,
becke13,
cleek11,
celeb9,
4 letter words:
feck13,
beck12,
keef11,
beef9,
clef9,
feeb9,
keel8,
leek8,
leke8,
feel7,
flee7,
blee6,
3 letter words:
kef10,
keb9,
eek7,
eke7,
elk7,
lek7,
elf6,
fee6,
bee5,
bel5,
cee5,
cel5,
eel3,
lee3,
2 letter words:
ef5,
fe5,
be4,
ee2,
el2,