5 letter words:
cyber12,
4 letter words:
zerk17,
byke13,
beck12,
ryke11,
yerk11,
berk10,
kerb10,
reck10,
brey9,
byre9,
3 letter words:
zek16,
bez14,
rez12,
key10,
kye10,
keb9,
bey8,
bye8,
cry8,
erk7,
rye6,
reb5,
rec5,
2 letter words:
ky9,
by7,
ye5,
be4,
er2,
re2,