6 letter words:
swifty15,
5 letter words:
wifty14,
fisty11,
swift11,
4 letter words:
ywis10,
fist7,
fits7,
sift7,
wist7,
wits7,
3 letter words:
swy9,
fit6,
ifs6,
sif6,
sty6,
wis6,
wit6,
its3,
sit3,
tis3,
2 letter words:
fy8,
if5,
is2,
it2,
si2,
st2,
ti2,