5 letter words:
belts7,
blest7,
blets7,
trets5,
4 letter words:
bels6,
belt6,
best6,
bets6,
blet6,
rebs6,
erst4,
lest4,
lets4,
rest4,
rets4,
sett4,
stet4,
tels4,
test4,
tets4,
tres4,
tret4,
3 letter words:
bel5,
bes5,
bet5,
reb5,
els3,
ers3,
les3,
let3,
res3,
ret3,
sel3,
ser3,
set3,
tel3,
tet3,
2 letter words:
be4,
el2,
er2,
es2,
et2,
re2,