5 letter words:
swift11,
woofs11,
foist8,
foots8,
4 letter words:
woof10,
fist7,
fits7,
foot7,
sift7,
soft7,
stow7,
swot7,
tows7,
twos7,
wist7,
wits7,
woos7,
wost7,
wots7,
oots4,
soot4,
3 letter words:
fit6,
ifs6,
oft6,
sow6,
tow6,
two6,
wis6,
wit6,
woo6,
wos6,
wot6,
its3,
oot3,
sit3,
sot3,
tis3,
too3,
2 letter words:
if5,
of5,
ow5,
wo5,
is2,
it2,
oi2,
os2,
si2,
so2,
ti2,
to2,