5 letter words:
fritz17,
triff11,
fritt8,
fruit8,
4 letter words:
ziff19,
friz16,
futz16,
zurf16,
ritz13,
riff10,
ruff10,
tiff10,
tuff10,
fitt7,
frit7,
rift7,
tift7,
tuft7,
turf7,
ritt4,
3 letter words:
fiz15,
riz12,
zit12,
iff9,
fir6,
fit6,
fur6,
rif6,
rit3,
rut3,
tit3,
tui3,
tut3,
2 letter words:
if5,
it2,
ti2,
ur2,
ut2,