6 letter words:
knifer13,
niffer12,
reknit10,
tinker10,
invert9,
5 letter words:
kefir12,
knife12,
fifer11,
fiver11,
inker9,
kiter9,
reink9,
trike9,
feint8,
finer8,
infer8,
refit8,
riven8,
rivet8,
inert5,
inter5,
niter5,
nitre5,
trine5,
4 letter words:
fink11,
kerf11,
kief11,
fief10,
fife10,
five10,
riff10,
teff10,
tiff10,
keir8,
kent8,
kern8,
kier8,
kine8,
kirn8,
kite8,
knit8,
rink8,
tike8,
trek8,
fern7,
fine7,
fire7,
firn7,
fret7,
frit7,
neif7,
nevi7,
reft7,
reif7,
rife7,
rift7,
rive7,
tref7,
vein7,
vent7,
vert7,
vier7,
vine7,
nite4,
rein4,
rent4,
rite4,
tern4,
tier4,
tine4,
tire4,
3 letter words:
kef10,
kif10,
eff9,
iff9,
ink7,
irk7,
ken7,
kin7,
kir7,
kit7,
eft6,
fen6,
fer6,
fet6,
fie6,
fin6,
fir6,
fit6,
ref6,
rev6,
rif6,
vet6,
vie6,
ern3,
ire3,
net3,
nit3,
rei3,
ret3,
rin3,
ten3,
tie3,
tin3,
2 letter words:
ki6,
ef5,
fe5,
if5,
en2,
er2,
et2,
in2,
it2,
ne2,
re2,
ti2,