7 letter words:
foxfish23,
6 letter words:
offish15,
4 letter words:
fish10,
offs10,
3 letter words:
fix13,
fox13,
six10,
sox10,
xis10,
foh9,
iff9,
off9,
his6,
hos6,
ifs6,
ohs6,
2 letter words:
ox9,
xi9,
hi5,
ho5,
if5,
of5,
oh5,
sh5,
is2,
oi2,
os2,
si2,
so2,