6 letter words:
decern9,
5 letter words:
ceder8,
cered8,
creed8,
ender6,
4 letter words:
cede7,
cred7,
cere6,
deer5,
dene5,
dere5,
dree5,
need5,
nerd5,
rede5,
reed5,
rend5,
erne4,
3 letter words:
cee5,
rec5,
dee4,
den4,
end4,
red4,
ere3,
ern3,
nee3,
ree3,
2 letter words:
de3,
ed3,
en2,
er2,
ne2,
re2,