a-a a-b a-t aaa aab aad aao aar aat aav ab- aba abb abd abo abr abt abv ad- ada adb add ado adr adt adv aoa aob aod aoo aor aot aov ar- ara arb ard aro arr art arv at- ata atb atd ato atr att atv av- ava avb avd avo avr avt baa bab bad bao bar bat bav bba bbb bbd bbo bbr bbt bda bdb bdd bdo bdr bdt bdv boa bob bod boo bor bot bov bra brb brd bro brr brt brv bta btb btd bto btr btt btv bva bvb bvd bvo bvr bvt bvv daa dab dad dao dar dat dav dba dbb dbd dbo dbr dbt dbv dda ddb ddd ddo ddr ddt doa dob dod doo dor dot dov dra drb drd dro drr drt drv dta dtb dtd dto dtr dtt dtv dva dvb dvd dvr dvt oaa oab oad oao oar oat oav ob- oba obb obd obo obr obt obv oda odb odd odo odr odt odv oo- ooa oob ood ooo oor oot oov or- ora orb ord oro orr ort orv ot- ota otb otd oto otr ott otv ov- ova ovb ovd ovo ovv ra- raa rab rad rao rar rat rav rba rbb rbd rbo rbr rbt rda rdb rdd rdo rdr rdt rdv roa rob rod roo ror rot rov rra rrb rrd rrr rrt rta rtb rtd rto rtr rtt rtv rva rvb rvd rvo rvr rvt rvv taa tab tad tao tar tat tav tba tbb tbd tbo tbr tbt tbv tda tdb tdd tdo tdr tdt tdv to- toa tob tod too tor tot tov tra trb trd tro trr trt trv tta ttb ttd tto ttr ttt ttv tva tvb tvd tvo tvr tvt v-a vaa vab vad vao var vat vav vba vbd vbo vbr vbv vdb vdd vdo vdr vdt vdv voa vob vod voo vor vot vov vra vrb vrd vrr vrt vta vtb vto vtr vtt vtv vva vvb vvo vvr vvt vvv

a-do aaaa aaab aaad aaar aaav aaba aabb aabd aabt aada aadt aaoo aara aard aaro aart aata aatt aava abaa abab abad abar abat abb- abba abbb abbo abbr abbt abda abdo aboa abob abod aboo abor abot abov abra abro abta abva abvd adaa adab adad adao adar adat adba adda addd addo addr adob adod adoo ador adot adra adro adta advb advt aoba aora aorb aort aotd arab arad arar arat arba arda ardo aroa arob arod aroo aror arr- arra arro arrr arrt arta arto artr artv arva arvo at-t ataa atab atad atar atat atdt atob atod ator atot atra atro atta atto attr avab avao avar avat avda avor avot avra avro avva avvo baaa baad baar baat baba babb babo babr bada badb badd bado badr bar- bara barb bard baro barr bart bata bato batt bava bbad bbbb bbdd bbdo bd-r bdav boab boad boar boat boba bobb bobo boda bodb bodo boob bood boor boot bor- bora bord boro borr bort bota botb botd boto bott bova bovo brab brad brao brat brav brda brdo brdt broa brob brod broo bror brot brrr btaa btdt btob btor btrt bttb d-bo d-tv daab daad daar daba dabb dabo dabt dada dado dara darb dard daro darr dart data dato datr datt dava dbar dbtt dddd ddot ddtv doab doar doat doba dobb dod- doda dodd dodo doob dood door doot dora dord doro dorr dort dota dotd doto dott draa drab drad drar drat drba drda drob drod drot drra dtaa dtor dtot dvar dvda dvdr dvoa dvor dvra oara obad obba obbo obdt obor obot obra obro obtd odbo odda oddd odoo odor odot odra odva ooaa ooba ooda oooo oora oord oort ootb orab orad orao orar orat orav orba orbb orbo orda ordo oro- oror orot orra orro orta orto orvr otar otbd oto- otoo otor otov otra otro otta otto ovar ovda ovo- ovod ovoo ovot ovra raab raad raat raba rabb rabo rada radd rado radr radt raob rara rarb raro rata rato ratt rava rbbb rbbr roab road roar roat rob- roba robb robo robt roda rodd rodo roob rood roor root rora roro rort rota roto rotr rott rova rovo rrad rrat rrrr rtdt rtva taa- taar taat taba tabb tabo tada tado taoa taor tara tarb tard taro tarr tart tata tatb tato tatr tatt tatv tava tavo tbar tbrb tbta tddb tdor tdra tdtv toab toad toat toba tobo tobt toda todd todo todt tooa tood toor toot tora tord toro torr tort torv tota totd toto totr tott tova tovo traa trab trad trao trat trav troa trod troo trot trra trtr ttab ttbb tttt tvad tvro tvrr tvtv vaad vaar vaat vada vado vara vard varr vart vata vato vatt vava vdot voad voar voat voda vodo voor voot vor- vora vord voro vort vota votd voto vrav vrba vrot vrto vvob vvvv

-aaa- -abad aaata aabaa aabba aabra aadat abaab ababa abada abara abava abbad abbar abbat abbod abbot aboab aboad aboat abobo abood aboot abora abord abort abott abovo abrad abrar abrod abtaa abtao abtar adaba adada adado adara adaro adata adato adava adbot addra addto adoar adobo adodb adoor adora adoro adrad adrar adroa aort- aorta ar-ab araat arab- araba arabo arada arado arara arata arava arbab arbar arbat arbor arbot ardab ardod ardor ardra aroab aroad aroar aroba aroor aroot arora artar artat arto- artoo artot arvad arvar atara atbar atbat atoad atoot atora atoto atrab atro- atroa atrot attar atto- attra atvod atvr avara avard avaro avato avdat avoda avord baard baart baata baava babar babdo baboo babot babra badao badar badat baddo badod badoo badot badra badto baoro baraa barab barad barao barar barat barba barda bardo baro- baroa baroo baror barot barra barro barta barto barva batab batad batar batat batob batoo bator batov batra batta batto bavar bavra bbart bdoor bdort