5 letter words:
forks12,
porks11,
profs10,
4 letter words:
fork11,
kops10,
pork10,
fops9,
prof9,
kors8,
roks8,
fros7,
orfs7,
pros6,
3 letter words:
kop9,
fop8,
kor7,
kos7,
rok7,
for6,
fro6,
orf6,
ops5,
pos5,
pro5,
sop5,
ors3,
2 letter words:
ko6,
of5,
op4,
po4,
or2,
os2,
so2,