5 letter words:
cuifs10,
fasci10,
ficus10,
4 letter words:
faix14,
faux14,
axis11,
cauf9,
cuif9,
fisc9,
fuci9,
fusc9,
aufs7,
asci6,
saic6,
3 letter words:
fax13,
fix13,
sax10,
six10,
xis10,
auf6,
fas6,
ifs6,
sif6,
cis5,
sac5,
sic5,
ais3,
sai3,
sau3,
sui3,
2 letter words:
ax9,
xi9,
xu9,
fa5,
if5,
ai2,
as2,
is2,
si2,
us2,