6 letter words:
ruiner6,
5 letter words:
enure5,
inure5,
rerun5,
urine5,
4 letter words:
erne4,
rein4,
ruer4,
ruin4,
rune4,
3 letter words:
ere3,
ern3,
err3,
ire3,
nee3,
ree3,
rei3,
rin3,
rue3,
run3,
urn3,
2 letter words:
en2,
er2,
in2,
ne2,
nu2,
re2,
un2,