6 letter words:
enface11,
fennec11,
5 letter words:
fence10,
nance7,
4 letter words:
cafe9,
face9,
fane7,
acne6,
cane6,
nene4,
3 letter words:
fan6,
fee6,
fen6,
ace5,
can5,
cee5,
ane3,
nae3,
nan3,
nee3,
2 letter words:
ef5,
fa5,
fe5,
ae2,
an2,
en2,
na2,
ne2,