7 letter words:
flyboys18,
6 letter words:
flyboy17,
flybys17,
5 letter words:
flyby16,
4 letter words:
foys10,
boys9,
fobs9,
sybo9,
yobs9,
lobs6,
slob6,
3 letter words:
fly9,
foy9,
boy8,
bys8,
fob8,
yob8,
sly6,
soy6,
bos5,
lob5,
sob5,
sol3,
2 letter words:
by7,
of5,
oy5,
yo5,
bo4,
lo2,
os2,
so2,
