6 letter words:
rutter6,
turret6,
5 letter words:
kurre9,
truer5,
utter5,
4 letter words:
zerk17,
trez13,
trek8,
turk8,
ruer4,
tret4,
true4,
3 letter words:
zek16,
rez12,
erk7,
euk7,
ket7,
kue7,
uke7,
err3,
ret3,
rue3,
rut3,
tet3,
tut3,
ure3,
ute3,
2 letter words:
er2,
et2,
re2,
te2,
ur2,
ut2,