7 letter words:
jeffing21,
6 letter words:
effing13,
5 letter words:
feign9,
4 letter words:
jeff17,
jiff17,
fief10,
fife10,
niff10,
feni7,
fine7,
neif7,
nief7,
nife7,
gien5,
3 letter words:
jig11,
jin10,
eff9,
iff9,
feg7,
fig7,
gif7,
fen6,
fie6,
fin6,
nef6,
eng4,
gen4,
gie4,
gin4,
neg4,
nie3,
2 letter words:
ef5,
fe5,
if5,
gi3,
en2,
in2,
ne2,