a-be a-ii aaaa aaab aaac aaae aaai aaar aaba aabb aabc aabi aaca aacb aacc aace aaci aacr aaea aaec aage aaib aaic aaii aara aarc aare aari abaa abab abac abae abag abai abar abb- abba abbb abbe abbi abbr abca abcb abcc abci abcr abec abee aber abia abib abic abie abig abir abra abrc abri acaa acab acac acae acag acai acar acba acca accc acce acci ace- acea acec acer acga acgi acgr aci- acia acic acie acir acr- acra acrc acre acri acrr aeac aebi aecb aeci aeer aega aer- aera aerc aeri agac agag agai agar agba agca agcc agce agea agee agei ager agga agge aggi agia agib agic agie agig agii agir agra agre agri aiai aiba aica aicc aice aicr aiea aiee aiga aiia aiib aiic aiir aira aire airi arab arac arae arag arai arar arba arbe arbi arc- arca arce arci area arec aree areg arei arga argb arge argi aria arib arie arig arii arr- arra arrc arre arrg arri arrr ba-i baaa baar baba babb babe babi babr bac- baca bacc bace baci baer baga bage bagg bagi baia baib baic baie baig bair bar- bara barb barc bare barg bari barr bbbb bbci bbeb bbga bbrc bbrg bcaa bcar bcbc bcbg bcca bccc bcci bcec bcer bcia bcie bcra beag bear beba bebb bebe bebi beca beci beeb beeg beer bega begg begi beia beic beir bera berc bere berg beri berr bgca bgia biar biba bibb bibe bibi bica bicc bice bicg bici bieb bier biga bigb bigc bige bigg bira birb bire birg biri birr brab brac brae brag brai brca brcb brce brea breb brec bree breg brei brer bria bric brie brig brrr caaa caab caac caba cabe cabg cabi cac- caca cacc cace caci cacr caec caei caer caga cage cagg cagi cagr caia caib caic cair cara carb carc care cari carr cbac cbar cbbc cbca cbcc cbce cbcr cbea cbec cbee cber cbga cbgb cbia cbir cbre ccaa ccab ccac ccag ccai ccar ccba ccbc ccca cccb cccc ccci ccee ccga ccgc ccic ccii ccir ccra ccrc ccre ccrg ccri ceac cear ceba cec- ceca cece ceci ceeb ceec cege cer- cera cerc cere ceri cgac cgcc cgcg cger ciaa ciar ciba cibc cibe cibi cica cicc cici cicr ciee cier ciga cigi ciia ciii cira cirb circ cire ciri cirr crab crac crag crai crar crbc crca crcc crce crcr cre- crea creb crec cree creg crei cria crib cric crie crig eaba eaca eacc eaec eaga eage eara earb eare ebac ebba ebbc ebbr ebcc eber ebic ecaa ecac ecai ecar ecbc ecbe ecca eccb eccc ecce ecci ecib ecig ecra ecrc ecri ecrr eeca eeea eeee eega eera eerc eerg egaa egae egar egba egbe egcc egcg egcr egea egec egee eger eggb egge eggi egir egra egre egri eica eiec eiei eier eige eigg eira eire erba erbb erbe erca ercc erce ereb erec erei erer erg- erga ergg ergi eria eric erie erra errc erre gaar gaba gabb gabe gabi gabr gace gaea gaec gaer gaga gage gagg gagi gaia gaie gaig gair gara garb gare garg gari garr gbag gc-c gcaa gcbc gccc gcic gcii gcrg geab geai gear geba gebe gebi geca gece geer gege gegg geia geic geie geig geir gera gerb gere geri gggg giaa giac giai giba gibb gibe gica gicr gier giga gige gigg gigi gira gire girg giri girr grab grac grae grai grbr grcc grce grea greb grec gree greg gria grib gric grie grig grrr i-be iaaa iaac iaai iaba iaca iacc iacr iaea iaec iaia iara iarc iare ibac ibar ibca ibea ibec ibeg ibga ibge ibia ibie ibra ibrc ibri icaa icab icac icag icai icar icbc icca iccb iccc icci iccr icea icec icee icer icga icgc icra icrc icre icrr ieac iecc ieie iera iere ieri igac igar igba igbc igcc igea iger igga igia igra igri iiac iica iiie iiii iira iirc irac irae irai irar irbe irca ircc ircg iree irer iri- iria iric irie irig irra irrc irre irri raab raag raba rabb rabe rabi rac- raca racc race raci raec raeg raer raga rage ragg ragi raia raic raie raig raii rair rara rarb rare rari rbbb rbbr rcac rcbc rccb rccc rcga rcgc rcic rcrg rea- reac reae rear reba rebb rebe reca recc rece reci recr reeb rega rege regi regr reia reii reir rera rere rerg reri rgba rgbe rgbi riaa riab riai rib- riba ribe rica ricc rice rier riga rige rigg rigi riia rire riri rrrr