5 letter words:
runts5,
turns5,
4 letter words:
nurs4,
nuts4,
runs4,
runt4,
rust4,
ruts4,
stun4,
tuns4,
turn4,
urns4,
urus4,
utus4,
3 letter words:
nur3,
nus3,
nut3,
run3,
rut3,
sun3,
sur3,
tun3,
uns3,
urn3,
uts3,
utu3,
2 letter words:
nu2,
st2,
un2,
ur2,
us2,
ut2,