4 letter words:
barf9,
beef9,
feeb9,
fare7,
fear7,
fere7,
frae7,
free7,
reef7,
bare6,
bear6,
beer6,
brae6,
bree6,
3 letter words:
fab8,
arf6,
far6,
fee6,
fer6,
ref6,
arb5,
bar5,
bee5,
bra5,
reb5,
are3,
ear3,
era3,
ere3,
ree3,
2 letter words:
ef5,
fa5,
fe5,
ab4,
ba4,
be4,
ae2,
ar2,
er2,
re2,