4 letter words:
boys9,
sybo9,
yobs9,
mibs8,
mobs8,
bios6,
miso6,
obis6,
3 letter words:
boy8,
bys8,
yob8,
yom8,
mib7,
mob7,
soy6,
bio5,
bis5,
bos5,
ism5,
mis5,
mos5,
obi5,
oms5,
sib5,
sim5,
sob5,
som5,
2 letter words:
by7,
my7,
oy5,
yo5,
bi4,
bo4,
mi4,
mo4,
om4,
is2,
oi2,
os2,
si2,
so2,