5 letter words:
skiff15,
kiefs12,
fiefs11,
fifes11,
stiff11,
teffs11,
tiffs11,
kites9,
skite9,
tikes9,
feist8,
4 letter words:
kefs11,
kief11,
kifs11,
effs10,
fief10,
fife10,
teff10,
tiff10,
kist8,
kite8,
kits8,
sike8,
skit8,
tike8,
efts7,
fest7,
fets7,
fist7,
fits7,
seif7,
sift7,
sett4,
site4,
stet4,
test4,
tets4,
ties4,
tits4,
3 letter words:
kef10,
kif10,
eff9,
iff9,
kis7,
kit7,
ski7,
tsk7,
efs6,
eft6,
fes6,
fet6,
fie6,
fit6,
ifs6,
its3,
sei3,
set3,
sit3,
tet3,
tie3,
tis3,
tit3,
2 letter words:
ki6,
ef5,
fe5,
if5,
es2,
et2,
is2,
it2,
si2,
ti2,