5 letter words:
kefir12,
kiter9,
toker9,
trike9,
troke9,
fetor8,
forte8,
ofter8,
refit8,
4 letter words:
fork11,
kerf11,
kief11,
keir8,
keto8,
kier8,
kite8,
kore8,
tike8,
toke8,
trek8,
fire7,
fore7,
fort7,
fret7,
frit7,
froe7,
reft7,
reif7,
rife7,
rift7,
tref7,
riot4,
rite4,
rote4,
roti4,
tier4,
tire4,
tiro4,
tore4,
tori4,
trio4,
3 letter words:
kef10,
kif10,
irk7,
kir7,
kit7,
koi7,
kor7,
oke7,
eft6,
fer6,
fet6,
fie6,
fir6,
fit6,
foe6,
for6,
fro6,
oft6,
ref6,
rif6,
ire3,
ore3,
ort3,
rei3,
ret3,
roe3,
rot3,
tie3,
toe3,
tor3,
2 letter words:
ki6,
ef5,
fe5,
if5,
of5,
er2,
et2,
it2,
oe2,
oi2,
or2,
re2,
ti2,
to2,