5 letter words:
donor6,
doorn6,
rondo6,
4 letter words:
orzo13,
zoon13,
doon5,
door5,
odor5,
ordo5,
rood5,
roon4,
3 letter words:
dzo13,
zoo12,
don4,
doo4,
dor4,
nod4,
ord4,
rod4,
noo3,
nor3,
ono3,
oon3,
oor3,
roo3,
2 letter words:
zo11,
do3,
od3,
no2,
on2,
oo2,
or2,