11 letter words:
greenkeeper18,
7 letter words:
epergne10,
preener9,
greener8,
regreen8,
reneger8,
6 letter words:
keeper12,
reperk12,
keener10,
reeker10,
renker10,
peenge9,
renege7,
5 letter words:
kreep11,
greek10,
kreng10,
kerne9,
repeg8,
neper7,
preen7,
genre6,
gerne6,
green6,
4 letter words:
keep10,
peek10,
peke10,
penk10,
perk10,
geek9,
keen8,
kern8,
knee8,
nerk8,
reek8,
reke8,
renk8,
geep7,
epee6,
neep6,
peen6,
peer6,
pene6,
pere6,
pern6,
pree6,
eger5,
gene5,
gere5,
gree5,
gren5,
erne4,
reen4,
3 letter words:
kep9,
keg8,
eek7,
eke7,
erk7,
ken7,
nek7,
peg6,
nep5,
pee5,
pen5,
per5,
pre5,
rep5,
eng4,
erg4,
gee4,
gen4,
neg4,
reg4,
een3,
ene3,
ere3,
ern3,
err3,
nee3,
ree3,
ren3,
2 letter words:
pe4,
ee2,
en2,
er2,
ne2,
re2,