a-ii aaaa aaab aaac aaai aaar aaba aabb aabc aabi aabt aaca aacb aacc aaci aaco aacr aact aaib aaic aaii aaoo aara aarc aari aaro aart aata aatc aatt abaa abab abac abai abar abat abb- abba abbb abbi abbo abbr abbt abca abcb abcc abci abcr abct abia abib abic abir abit aboa abob aboo abor abot abra abrc abri abro abta ac-t acaa acab acac acai acar acat acba acca accc acci acco acct aci- acia acic acir acoa acor acot acr- acra acrc acri acro acrr acta actc acti acto actt aiai aiba aibo aica aicc aicr aiia aiib aiic aiir aioc aioi aira airi airo airt aita aiti aitr aitt aoba aoca aora aorb aort aotc arab arac arai arar arat arba arbi arc- arca arci arco arct aria arib arii ario arit aroa arob aroi aroo aror arr- arra arrc arri arro arrr arrt arta artc arti arto artr at-t ataa atab atac atai atar atat atca atcc atco atcr atia atic atit atob atoc atoi ator atot atra atrc atri atro atta atti atto attr ba-i baaa baar baat baba babb babi babo babr bac- baca bacc baci baco bact baia baib baic baio bair bait bar- bara barb barc bari baro barr bart bata batc bati bato batt bbbb bbci bbrc bcaa bcar bcat bcbc bcca bccc bcci bcia bcit bcor bcra bctc biao biar biat biba bibb bibi bibo bica bicc bici bico bio- bioc bioi biot bira birb biri biro birr birt bita bitc bito bitt boab boac boai boar boat boba bobb bobi bobo boca boco boi- boii boit boob booc boor boot bor- bora bori boro borr bort bota botb boti boto bott brab brac brai brao brat brca brcb bria bric brio brit broa brob broc broo bror brot brrr brtc btaa btcc btob btor btrc btrt bttb c-bo caaa caab caac caat caba cabi cabo cac- caca cacc caci caco cacr caia caib caic caio cair cait caoi caor cara carb carc cari caro carr cart cat- cata catb catc cati cato catt cbac cbar cbat cbbc cbca cbcc cbcr cbct cbia cbir cbit cbot cbrt cbta cbtc ccaa ccab ccac ccai ccar ccat ccba ccbc ccca cccb cccc ccci ccic ccii ccir ccob ccoc ccra ccrc ccri ccrt cctb cctc cctt ciaa ciao ciar ciat ciba cibc cibi cibo cica cicc cici cico cicr cict ciia ciii ciit ciob cior cira cirb circ ciri ciro cirr cirt cita citb citi cito citt coai coat coba cobb cobi cobo coca coco coct coia coir coit coob coot cor- cora corb corc cori coro corr cort cota cotb cotc coti coto cott crab crac crai crar crat crbc crca crcc crcr cria crib cric crit crob croc croo cror crot crrt crtc ctab ctba ctbi ctca ctia ctic ctor ctot ctrc ctta iaaa iaac iaai iaat iaba iaca iacc iacr iact iaia iara iarc iart iata iatc iati ibac ibar ibat ibca ibia ibot ibra ibrc ibri ibro ibtb ibtc icaa icab icac icai icao icar icat icbc icca iccb iccc icci icco iccr icct icoc icor icra icrc icrr icrt icta iiac iica iiii iiio iiit iioi iioo iira iirc iita iitr iitt ioba iobi ioci ioii ioio ioit iooi iooo iora iori iota ioto irac irai irao irar irca ircc iri- iria iric irio irob iroc irra irrc irri irta irti itaa itac itai itar itat itia itic itoi itoo itor itra itri itta itto oaic oara obai obba obbo obia obit oboi obor obot obra obri obro ocab ocac ocat ocbc occa occc occi occt ocra ocro ocrr oct- octa octi octo oiba oici oiii oira oirt oita oitc oiti ooaa ooba oobi oocr ooia oooo oora oort ootb orab orac orai orao orar orat orba orbb orbi orbo orca orci orco ori- oria oric orio orit oro- oror orot orra orri orro orta ortc orto otac otar otic otit oto- otoo otor otra otro otta otti otto raab raat raba rabb rabi rabo rac- raca racc raci raco ract raia raic raii rair rait raob raoc rara rarb rari raro rata rati rato ratt rbbb rbbr rcac rcbc rcbo rccb rccc rcic rctc rcti riaa riab riai riat rib- riba ribo rica ricc rico rict riia riot riri rita riti rito ritt roab roar roat rob- roba robb robi robo robt roca rocc roco roia roio roir roit roob rooi roor root rora rorc rori roro rort rota rotc roti roto rotr rott rrat rrrr rtai rtca rtcc taa- taar taat taba tabb tabc tabi tabo taca tacc taci taco tact taia taio tair tait taoa taor tara tarb tarc tari taro tarr tart tata tatb tati tato tatr tatt tbar tbca tbcb tbcc tbit tbrb tbta tcca tccc tctc tiaa tiab tiao tiar tiba tibi tica ticc tico tiit tira tirb tiri tiro tirr tita titc titi tito titt toab toat toba tobi tobo tobt toca toci toco toit tooa toor toot tora torc tori toro torr tort tota totc toti toto totr tott traa trab trac trai trao trat trca trcc tri- tria trib tric trio trit troa troc troi troo trot trra trtc trtr ttab ttbb tttt