6 letter words:
fugues10,
grufes10,
5 letter words:
frugs9,
fugue9,
fugus9,
grufe9,
grues6,
gurus6,
surge6,
urges6,
usure5,
4 letter words:
fegs8,
frug8,
fugs8,
fugu8,
feus7,
furs7,
fuse7,
refs7,
serf7,
surf7,
ergs5,
grue5,
gues5,
gurs5,
guru5,
regs5,
rugs5,
urge5,
rues4,
ruse4,
suer4,
sure4,
ures4,
urus4,
user4,
3 letter words:
feg7,
fug7,
efs6,
erf6,
fer6,
fes6,
feu6,
fur6,
ref6,
erg4,
gue4,
gur4,
gus4,
reg4,
rug4,
seg4,
ugs4,
ers3,
res3,
rue3,
ser3,
sue3,
sur3,
ure3,
use3,
2 letter words:
ef5,
fe5,
gu3,
ug3,
er2,
es2,
re2,
ur2,
us2,