a-be a-ii aaaa aaab aaac aaad aaae aaai aaba aabb aabc aabd aabi aaca aacb aacc aacd aace aaci aada aadc aade aadi aaea aaec aaib aaic aaii abaa abab abac abad abae abai abb- abba abbb abbe abbi abca abcb abcc abcd abci abda abdi abec abed abee abia abib abic abid abie acaa acab acac acad acae acai acba acca accc accd acce acci acda acdb acdc acde acdi ace- acea acec aced aci- acia acic acid acie adaa adab adac adad adae adai adba adbc adbi adcc adci adda addc addd adde addi adea adeb adee adia adib adic adie aeac aebi aecb aeci aede aiai aiba aica aicc aicd aice aida aidb aidc aide aidi aiea aiee aiia aiib aiic aiid ba-i baaa baad baba babb babe babi bac- baca bacc bace baci bada badb badd bade badi baed baia baib baic baid baie bbad bbbb bbci bbdd bbeb bcaa bcbc bcca bccc bcci bcda bcde bcec bcia bcie bdbc bddc bdii bead beba bebb bebe bebi beca beci beda bede bedi beeb beed beia beic biad biba bibb bibe bibi bica bicc bice bici bida bide bidi bieb bied c-cd caaa caab caac caba cabe cabi cac- caca cacc cace caci cada cadc cadd cade cadi caec caei caia caib caic caid cbac cbbc cbca cbcc cbce cbdb cbdc cbdi cbea cbec cbee cbia cbid ccaa ccab ccac ccad ccai ccba ccbc ccca cccb cccc ccci ccdc ccdi cced ccee ccic ccid ccii cd-e cdaa cdac cdad cdai cdba cdda cddb cdec cdic cdii ceac cead ceba cec- ceca cece ceci ceda cedd cede cedi ceeb ceec ciaa ciba cibc cibe cibi cica cicc cici cida cidc cide cidi ciee ciia ciid ciii daab daad daae daba dabb daca dace daci dada dade dadi daeb daia daid daie dbcc dcbc dcca dccb dccc dcci dcdb dcia dcii dddd ddie deac dead deae deba debe debi dec- deca decc decd dece deci deda dedd dede dedi deeb deed deid deie dia- diab diac diad diba dibb dibe dica dice dici dida dide didi diea dieb died diii eaba eaca eacc eada eadb eadd eadi eaec ebac ebba ebbc ebcc ebed ebic ebid ecaa ecac ecad ecai ecbc ecbe ecca eccb eccc ecce ecci ecdc eced ecib edac edad edca edda eddc edde eddi ede- edea edei edia edie eeca eede eeea eeee eica eid- eide eidi eiec eied eiei i-be iaaa iaac iaai iaba iaca iacc iadb iadc iaea iaec iaia ibac ibad ibca ibea ibec ibed ibia ibid ibie icaa icab icac icad icai icbc icbd icca iccb iccc icci icdc icdd icde icea icec iced icee idad idae idbe idca idce idda idea idec ided idee idia idic idid idie ieac iecc ieie iiac iica iicd iida iide iied iiie iiii