5 letter words:
korun9,
inrun5,
inurn5,
union5,
4 letter words:
ikon8,
kino8,
kirn8,
knur8,
oink8,
rink8,
inro4,
iron4,
noir4,
nori4,
noun4,
ruin4,
3 letter words:
ink7,
irk7,
kin7,
kir7,
koi7,
kor7,
inn3,
ion3,
nor3,
nun3,
our3,
rin3,
run3,
urn3,
2 letter words:
ki6,
in2,
no2,
nu2,
oi2,
on2,
or2,
un2,