5 letter words:
boyfs13,
boysy13,
4 letter words:
boyf12,
moby11,
foys10,
boys9,
fobs9,
moys9,
somy9,
sybo9,
yobs9,
mobs8,
3 letter words:
foy9,
boy8,
bys8,
fob8,
moy8,
yob8,
yom8,
mob7,
oys6,
soy6,
yos6,
bos5,
mos5,
obs5,
oms5,
sob5,
som5,
2 letter words:
fy8,
by7,
my7,
of5,
oy5,
yo5,
bo4,
mo4,
ob4,
om4,
os2,
so2,