a-be a-ii aaaa aaab aaae aaai aaar aaba aabb aabi aabt aaea aaib aaii aaoe aaoo aara aare aari aaro aart aata aatt abaa abab abae abai abar abat abb- abba abbb abbe abbi abbo abbr abbt abee aber abet abia abib abie abir abit aboa abob aboo abor abot abra abri abro abta aebi aeer aeio aeit aer- aera aeri aero aeta aeto aetr aett aiai aiba aibo aiea aiee aiet aiia aiib aiir aioi aira aire airi airo airt aita aite aiti aitr aitt aoba aora aorb aort arab arae arai arar arat arba arbe arbi area aree arei areo aret aria arib arie arii ario arit aroa arob aroe aroi aroo aror arr- arra arre arri arro arrr arrt arta arte arti arto artr at-t ataa atab atae atai atar atat atea atee atei ateo ater atia atie atit atob atoe atoi ator atot atra atre atri atro atta atte atti atto attr ba-i baaa baar baat baba babb babe babi babo babr baer baia baib baie baio bair bait bar- bara barb bare bari baro barr bart bata bate bati bato batt bbbb bbeb bbet bear beat beba bebb bebe bebi bebo beeb beer beet beia beir beit beo- beor beot bera bere beri bero berr bert beta bete beti beto bett biao biar biat biba bibb bibe bibi bibo bieb bier biet bio- bioi biot bira birb bire biri biro birr birt bita bite bito bitt boab boai boar boat boba bobb bobe bobi bobo boea boee boeo boer boet boi- boie boii boit boob booe boor boot bor- bora bore bori boro borr bort bota botb bote boti boto bott brab brae brai brao brat brea breb bree brei breo brer bret bria brie brio brit broa brob broe broo bror brot brrr btaa btie btob btor btrt bttb eaba eara earb eare earo eart eata eate eati ebba ebbo ebbr eber ebit eboe eboo ebor ebro eeea eeee eera eero eeta eete eiao eiei eier eira eire eita eitb eiti eito eitr eoir eora eore eori eota eoto erat erba erbb erbe ereb erei erer eret eria erie erio erit erob eroe eroi eroo erra erre erro erta etai etat etbr etee eter etio etoe etra etre etro etta ette etti etto i-be iaaa iaai iaat iaba iaea iaia iara iare iart iata iate iati ibar ibat ibea ibet ibia ibie ibot ibra ibri ibro ibtb ieat ieet ieie ieio iera iere ieri ieta iett iiie iiii iiio iiit iioi iioo iira iita iitr iitt ioba iobi ioee ioii ioio ioit iooi iooo iora iore iori iota iote ioto irae irai irao irar irbe iree irer iri- iria irie irio irob irra irre irri irta irte irti itaa itai itar itat itbe itea iter itet itia itie itoi itoo itor itra itri itta itto o-eo oaer oara oare oate obai obba obbo obea ober obet obia obie obit oboe oboi obor obot obra obre obri obro oera oere oeta oeti oiba oier oiii oira oire oirt oita oiti ooaa ooba oobe oobi ooer ooia oooo oora oore oort ootb orab orae orai orao orar orat orba orbb orbe orbi orbo ore- orea oreb oreo orer ori- oria orie orio orit oro- oroe oror orot orra orri orro orta orte orto otar otea otee oter otit oto- otoe otoo otor otra otre otro otta otte otti otto raab raat raba rabb rabe rabi rabo raer raia raie raii rair rait raob rara rarb rare rari raro rata rate rati rato ratt rbbb rbbr rea- reae reao rear reat reba rebb rebe rebo reeb reet reia reii reir reit reot rera rere reri rero rert reta rete reti reto retr rett riaa riab riai riat rib- riba ribe ribo rier riet riia riot rire riri rita rite riti rito ritt roab roar roat rob- roba robb robe robi robo robt roea roer roet roia roio roir roit roob rooi roor root rora rore rori roro rort rota rote roti roto rotr rott rrat rrrr rtai rtee rtei taa- taar taat taba tabb tabe tabi tabo taer taia taio tair tait taoa taor tara tarb tare tari taro tarr tart tata tatb tate tati tato tatr tatt tbar tbit tbrb tbta tear teat teba tebo teer teet teia teie teir teor ter- tera tere teri tero terr teta tete teti teto tetr tett tiaa tiab tiao tiar tiba tibi tie- tiea tiee tiei tieo tier tiet tiit tira tirb tire tiri tiro tirr tita tite titi tito titt toab toat toba tobe tobi tobo tobt toea toee toei toer toet toie toit tooa toor toot tora tore tori toro torr tort tota tote toti toto totr tott traa trab trae trai trao trat tre- trea tree trei treo tret tri- tria trib trie trio trit troa troe troi troo trot trra trte trtr ttab ttbb tteo tter ttoe tttt