5 letter words:
folks12,
kilos9,
filos8,
foils8,
4 letter words:
folk11,
kifs11,
ilks8,
kilo8,
kois8,
silk8,
filo7,
fils7,
foil7,
oils4,
silo4,
soil4,
soli4,
3 letter words:
kif10,
ilk7,
kis7,
koi7,
kos7,
ski7,
fil6,
ifs6,
lis3,
oil3,
sol3,
2 letter words:
ki6,
if5,
of5,
is2,
li2,
lo2,
oi2,
os2,
si2,
so2,