5 letter words:
fikes12,
kiefs12,
4 letter words:
fike11,
fisk11,
kefs11,
kief11,
kifs11,
eiks8,
kois8,
oiks8,
okes8,
seik8,
sike8,
skeo8,
skio8,
soke8,
feis7,
foes7,
seif7,
3 letter words:
kef10,
kif10,
eik7,
kis7,
koi7,
kos7,
oik7,
oke7,
sik7,
ski7,
efs6,
fes6,
fie6,
foe6,
ifs6,
sif6,
ios3,
iso3,
oes3,
ose3,
sei3,
2 letter words:
ki6,
ko6,
ef5,
fe5,
if5,
of5,
es2,
io2,
is2,
oe2,
oi2,
os2,
si2,
so2,