6 letter words:
grugru8,
rugger8,
reurge7,
5 letter words:
egger7,
grege7,
gurge7,
regur6,
urger6,
4 letter words:
eger5,
euge5,
gere5,
gree5,
grue5,
guru5,
urge5,
ruer4,
ruru4,
3 letter words:
egg5,
erg4,
gee4,
gue4,
gur4,
reg4,
rug4,
ere3,
err3,
ree3,
rue3,
ure3,
2 letter words:
gu3,
ug3,
ee2,
er2,
re2,
ur2,