4 letter words:
zerk17,
zouk17,
zero13,
kero8,
kore8,
koru8,
roke8,
euro4,
roue4,
3 letter words:
zek16,
rez12,
erk7,
euk7,
kor7,
kue7,
oke7,
ouk7,
rok7,
uke7,
ore3,
our3,
reo3,
roe3,
rue3,
ure3,
2 letter words:
zo11,
ko6,
er2,
oe2,
or2,
ou2,
re2,
ur2,