6 letter words:
cyesis11,
5 letter words:
fyces13,
cissy10,
fices10,
fiscs10,
scyes10,
syces10,
syncs10,
yince10,
fenis8,
fines8,
neifs8,
niefs8,
nifes8,
seifs8,
snyes8,
syens8,
synes8,
cines7,
sices7,
since7,
nisse5,
sensi5,
siens5,
sines5,
snies5,
4 letter words:
fyce12,
feys10,
fice9,
fisc9,
scye9,
syce9,
sync9,
feis7,
feni7,
fens7,
fess7,
fine7,
fins7,
nefs7,
neif7,
nief7,
nife7,
nyes7,
seif7,
seys7,
snye7,
syen7,
syes7,
syne7,
yens7,
yins7,
cens6,
cess6,
cine6,
ices6,
nice6,
secs6,
sice6,
sics6,
ness4,
nies4,
seis4,
sens4,
sien4,
sies4,
sine4,
sins4,
3 letter words:
fey9,
icy8,
efs6,
fen6,
fes6,
fie6,
fin6,
ifs6,
nef6,
nye6,
nys6,
sey6,
sif6,
sny6,
sye6,
syn6,
yen6,
yes6,
yin6,
cis5,
ice5,
sec5,
sic5,
ens3,
ess3,
ins3,
nie3,
nis3,
sei3,
sen3,
sin3,
sis3,
2 letter words:
fy8,
ef5,
fe5,
if5,
ny5,
ye5,
en2,
es2,
in2,
is2,
ne2,
si2,