5 letter words:
zitis14,
softy11,
bitsy10,
foist8,
obits7,
4 letter words:
fozy19,
sizy16,
ziti13,
zits13,
foys10,
boys9,
fibs9,
fobs9,
sybo9,
toby9,
yobs9,
fist7,
fits7,
sift7,
soft7,
toys7,
bios6,
bits6,
bots6,
ibis6,
obis6,
obit6,
stob6,
3 letter words:
fiz15,
biz14,
zit12,
foy9,
boy8,
bys8,
fib8,
fob8,
yob8,
fit6,
ifs6,
oft6,
soy6,
sty6,
toy6,
bio5,
bis5,
bit5,
bos5,
bot5,
obi5,
sib5,
sob5,
its3,
sit3,
sot3,
tis3,
2 letter words:
by7,
if5,
of5,
oy5,
yo5,
bi4,
bo4,
is2,
it2,
oi2,
os2,
si2,
so2,
ti2,
to2,