4 letter words:
pioy9,
pity9,
pyot9,
toby9,
typo9,
bito6,
obit6,
topi6,
3 letter words:
boy8,
yip8,
yob8,
bop7,
toy6,
bio5,
bit5,
boi5,
bot5,
obi5,
opt5,
pit5,
poi5,
pot5,
tip5,
top5,
2 letter words:
by7,
oy5,
yo5,
bi4,
bo4,
ob4,
op4,
pi4,
po4,
io2,
it2,
oi2,
ti2,
to2,