6 letter words:
riflip11,
4 letter words:
flip9,
flop9,
prof9,
filo7,
flir7,
flor7,
foil7,
rolf7,
lipo6,
pili6,
pirl6,
liri4,
loir4,
roil4,
3 letter words:
fop8,
fil6,
fir6,
for6,
fro6,
orf6,
rif6,
lip5,
lop5,
pir5,
poi5,
pol5,
pro5,
rip5,
lor3,
oil3,
2 letter words:
if5,
of5,
op4,
pi4,
po4,
io2,
li2,
lo2,
oi2,
or2,