6 letter words:
workup15,
kouroi10,
5 letter words:
iroko9,
koori9,
poori7,
4 letter words:
zouk17,
orzo13,
ouzo13,
zori13,
work11,
pook10,
pork10,
pouk10,
prow9,
koro8,
koru8,
kuri8,
rook8,
poor6,
pour6,
proo6,
puir6,
puri6,
roop6,
roup6,
3 letter words:
wiz15,
poz14,
zip14,
riz12,
zoo12,
kow10,
wok10,
kip9,
kop9,
pow8,
wop8,
irk7,
kir7,
koi7,
kor7,
oik7,
ouk7,
rok7,
row6,
woo6,
oop5,
oup5,
pir5,
piu5,
poi5,
poo5,
pro5,
pur5,
rip5,
upo5,
urp5,
oor3,
our3,
roo3,
2 letter words:
zo11,
ki6,
ko6,
ow5,
wo5,
op4,
pi4,
po4,
up4,
io2,
oi2,
oo2,
or2,
ou2,
ur2,