6 letter words:
drifts10,
5 letter words:
drift9,
first8,
frits8,
rifts8,
dirts6,
4 letter words:
difs8,
fids8,
firs7,
fist7,
fits7,
frit7,
rifs7,
rift7,
sift7,
dirt5,
dits5,
rids5,
stir4,
3 letter words:
dif7,
fid7,
fir6,
fit6,
ifs6,
rif6,
dis4,
dit4,
ids4,
rid4,
its3,
sir3,
sit3,
sri3,
tis3,
2 letter words:
if5,
id3,
is2,
it2,
si2,
ti2,