7 letter words:
reekier11,
beerier9,
retiree7,
6 letter words:
reeker10,
eerier6,
retire6,
5 letter words:
biker11,
kiter9,
trike9,
beret7,
biter7,
brier7,
tribe7,
eerie5,
retie5,
trier5,
4 letter words:
berk10,
bike10,
birk10,
kerb10,
kibe10,
keet8,
keir8,
kier8,
kite8,
reek8,
tike8,
trek8,
beer6,
beet6,
bier6,
birr6,
bite6,
bree6,
brie6,
brit6,
rete4,
rite4,
tier4,
tire4,
tree4,
3 letter words:
eek7,
eke7,
irk7,
kir7,
kit7,
bee5,
bet5,
bit5,
brr5,
reb5,
rib5,
ere3,
err3,
ire3,
ree3,
rei3,
ret3,
tee3,
tie3,
2 letter words:
ki6,
be4,
bi4,
er2,
et2,
it2,
re2,
ti2,