5 letter words:
ziffs20,
oozes14,
fiefs11,
fifes11,
4 letter words:
ziff19,
ooze13,
size13,
zoos13,
effs10,
fief10,
fife10,
fifi10,
offs10,
feis7,
foes7,
oofs7,
seif7,
oose4,
3 letter words:
fez15,
fiz15,
sez12,
zoo12,
zos12,
eff9,
iff9,
off9,
efs6,
fes6,
fie6,
foe6,
ifs6,
oof6,
sif6,
ios3,
iso3,
oes3,
oos3,
ose3,
sei3,
2 letter words:
zo11,
ef5,
fe5,
if5,
of5,
es2,
io2,
is2,
oe2,
oi2,
oo2,
os2,
si2,
so2,