9 letter words:
birthrate14,
8 letter words:
birretta10,
brattier10,
7 letter words:
rebirth12,
arbiter9,
battier9,
biretta9,
rarebit9,
ratbite9,
rattier7,
retrait7,
tartier7,
6 letter words:
bather11,
bertha11,
breath11,
herbar11,
thibet11,
hatter9,
hitter9,
rather9,
threat9,
tither9,
baiter8,
barite8,
barret8,
barrie8,
barter8,
batter8,
bitter8,
rebait8,
tabret8,
terbia8,
artier6,
attire6,
irater6,
ratite6,
ratter6,
ritter6,
tarter6,
territ6,
tertia6,
triter6,
5 letter words:
baith10,
bathe10,
beath10,
berth10,
birth10,
brith10,
habit10,
rehab10,
airth8,
earth8,
hater8,
heart8,
hirer8,
ither8,
rathe8,
their8,
theta8,
thrae8,
tithe8,
barer7,
barre7,
betta7,
biter7,
bitte7,
briar7,
brier7,
britt7,
erbia7,
rebar7,
rebit7,
taber7,
tribe7,
airer5,
arett5,
arret5,
irate5,
rater5,
retia5,
tarre5,
tater5,
tatie5,
terai5,
terra5,
tetra5,
tetri5,
titer5,
titre5,
trait5,
treat5,
trier5,
trite5,
4 letter words:
baht9,
bath9,
beth9,
bhat9,
herb9,
eath7,
haet7,
hair7,
hare7,
hart7,
hate7,
hear7,
heat7,
heir7,
hire7,
rath7,
rhea7,
tahr7,
tath7,
tehr7,
teth7,
thae7,
thar7,
that7,
thir7,
abet6,
abri6,
bait6,
bare6,
bate6,
batt6,
bear6,
beat6,
beta6,
bier6,
birr6,
bite6,
bitt6,
brae6,
brat6,
brei6,
brer6,
brie6,
brit6,
rabi6,
riba6,
tabi6,
airt4,
aret4,
arti4,
etat4,
rait4,
rare4,
rate4,
rear4,
rite4,
ritt4,
tait4,
tare4,
tart4,
tate4,
tear4,
teat4,
tiar4,
tier4,
tire4,
tirr4,
tite4,
trat4,
tret4,
trie4,
3 letter words:
bah8,
ahi6,
eth6,
hae6,
hat6,
her6,
het6,
hie6,
hit6,
rah6,
reh6,
the6,
arb5,
bar5,
bat5,
bet5,
bit5,
bra5,
brr5,
reb5,
rib5,
tab5,
air3,
ait3,
are3,
art3,
ate3,
att3,
ear3,
eat3,
era3,
err3,
eta3,
ire3,
ita3,
rai3,
rat3,
rei3,
ret3,
ria3,
rit3,
tae3,
tai3,
tar3,
tat3,
tea3,
tet3,
tie3,
tit3,
2 letter words:
ah5,
eh5,
ha5,
he5,
hi5,
ab4,
ba4,
be4,
bi4,
ae2,
ai2,
ar2,
at2,
ea2,
er2,
et2,
it2,
re2,
ta2,
te2,
ti2,
