5 letter words:
kiefs12,
4 letter words:
kefs11,
kief11,
kifs11,
kois8,
okes8,
sike8,
soke8,
foes7,
seif7,
3 letter words:
kef10,
kif10,
kis7,
koi7,
kos7,
oke7,
ski7,
efs6,
fes6,
fie6,
foe6,
ifs6,
oes3,
ose3,
sei3,
2 letter words:
ki6,
ef5,
fe5,
if5,
of5,
es2,
is2,
oe2,
oi2,
os2,
si2,
so2,