7 letter words:
fifteen13,
benefit12,
5 letter words:
knife12,
befit10,
kente9,
feint8,
4 letter words:
biff12,
fink11,
keef11,
kief11,
bike10,
fief10,
fife10,
kibe10,
teff10,
tiff10,
beef9,
feeb9,
keen8,
keet8,
kent8,
kine8,
kite8,
knee8,
knit8,
tike8,
feet7,
fete7,
fine7,
neif7,
been6,
beet6,
bene6,
bent6,
bine6,
bint6,
bite6,
nite4,
teen4,
tine4,
3 letter words:
kef10,
kif10,
eff9,
iff9,
fib8,
eek7,
eke7,
ink7,
ken7,
kin7,
kit7,
eft6,
fee6,
fen6,
fet6,
fie6,
fin6,
fit6,
bee5,
ben5,
bet5,
bin5,
bit5,
neb5,
nib5,
nee3,
net3,
nit3,
tee3,
ten3,
tie3,
tin3,
2 letter words:
ki6,
ef5,
fe5,
if5,
be4,
bi4,
en2,
et2,
in2,
it2,
ne2,
ti2,