4 letter words:
bony9,
boys9,
cony9,
cosy9,
coys9,
sybo9,
sync9,
yobs9,
cobs8,
nosy7,
cons6,
nobs6,
snob6,
3 letter words:
boy8,
bys8,
coy8,
yob8,
cob7,
soy6,
syn6,
yon6,
bos5,
con5,
cos5,
nob5,
sob5,
nos3,
ons3,
son3,
2 letter words:
by7,
oy5,
yo5,
bo4,
no2,
on2,
os2,
so2,