9 letter words:
nebenkern15,
6 letter words:
keener10,
kenner10,
brenne8,
5 letter words:
nebek11,
kerne9,
benne7,
renne5,
4 letter words:
berk10,
kerb10,
keen8,
kern8,
knee8,
nerk8,
reek8,
reke8,
renk8,
been6,
beer6,
bene6,
bere6,
bree6,
bren6,
erne4,
nene4,
reen4,
3 letter words:
keb9,
eek7,
eke7,
erk7,
ken7,
nek7,
bee5,
ben5,
neb5,
reb5,
een3,
ene3,
ere3,
ern3,
nee3,
ree3,
ren3,
2 letter words:
be4,
ee2,
en2,
er2,
ne2,
re2,
