5 letter words:
recks11,
treks9,
crest7,
trets5,
4 letter words:
reck10,
trek8,
recs6,
sect6,
erst4,
rest4,
rets4,
sett4,
stet4,
test4,
tets4,
tres4,
tret4,
3 letter words:
tsk7,
rec5,
sec5,
ers3,
res3,
ret3,
ser3,
set3,
tet3,
2 letter words:
er2,
es2,
et2,
re2,