a-be a-ii aaaa aaab aaac aaad aaae aaai aaap aaba aabb aabc aabd aabi aabp aaca aacb aacc aacd aace aaci aacp aada aadc aade aadi aaea aaec aaep aaib aaic aaii aapa aapc aapi abaa abab abac abad abae abai abap abb- abba abbb abbe abbi abca abcb abcc abcd abci abcp abda abdi abec abed abee abia abib abic abid abie abpa abpc abpd abpi abpp acaa acab acac acad acae acai acap acba acca accc accd acce acci accp acda acdb acdc acde acdi acdp ace- acea acec aced aci- acia acic acid acie acip acpa acpd acpe acpi adaa adab adac adad adae adai adap adba adbc adbi adcc adci adda addc addd adde addi adea adeb adee adia adib adic adie adip adp- aeac aeap aebi aecb aeci aede aiai aiba aica aicc aicd aice aicp aida aidb aidc aide aidi aiea aiee aiia aiib aiic aiid aipa aipe aipi apac apai apap apba apca apcb apcc apcd apda apdd apea apec aped apep api- apia apic apid apie apip appa appc appd ba-i baaa baad baba babb babe babi bac- baca bacc bace baci bada badb badd bade badi baed baia baib baic baid baie bapa bapc bape bapi bapp bbad bbbb bbci bbdd bbeb bcaa bcap bcbc bcbp bcca bccc bcci bcda bcde bcec bcia bcie bcpp bdbc bddc bdii bdpc bead beap beba bebb bebe bebi beca beci beda bede bedi beeb beed beep beia beic biad biap biba bibb bibe bibi bica bicc bice bici bida bide bidi bieb bied bipa bipp bpai bpcp bpda bpea c-cd caaa caab caac caap caba cabe cabi cac- caca cacc cace caci cada cadc cadd cade cadi caec caei caia caib caic caid caip capa capb capc capd cape capi capp cbac cbbc cbca cbcc cbce cbcp cbdb cbdc cbdi cbea cbec cbee cbia cbid cbpc cbpp ccaa ccab ccac ccad ccai ccap ccba ccbc ccca cccb cccc ccci cccp ccdc ccdi ccdp cced ccee ccic ccid ccii ccip ccpa ccpe ccpp cd-e cdaa cdac cdad cdai cdba cdda cddb cdec cdic cdii ceac cead ceba cebp cec- ceca cece ceci cecp ceda cedd cede cedi ceeb ceec ceip cepa cepc cepe cepp ciaa ciba cibc cibe cibi cica cicc cici cida cidc cide cidi cidp ciee ciia ciid ciii cipa cipp cpaa cpac cpad cpap cpbc cpca cpce cpea cpeb cpep cpia cpic cppa cppd daab daad daae daap daba dabb dabp daca dace daci dada dade dadi daeb daia daid daie dapa dape dapi dapp dbcc dbcp dbpc dbpd dcbc dcca dccb dccc dcci dccp dcdb dcia dcii dddd ddie deac dead deae deap deba debe debi dec- deca decc decd dece deci deda dedd dede dedi deeb deed deep deid deie deip depa depc depe depp dia- diab diac diad diap diba dibb dibe dibp dica dice dici dida dide didi diea dieb died diep diii dipa dipc dipe dipp dpaa dpac dpbc dpci dpcp dpie dppa dppc eaba eaca eacc eada eadb eadd eadi eadp eaec eapc eapp ebac ebba ebbc ebcc ebed ebic ebid ecaa ecac ecad ecai ecbc ecbe ecca eccb eccc ecce ecci ecdc eced ecib ecip ecpa ecpd ecpp edac edad edca edda eddc edde eddi eddp ede- edea edei edia edie edip eeca eede eeea eeee eica eid- eide eidi eiec eied eiei epaa epac epad epcc epci epec epee epi- epia epic epid epie epip eppa eppc eppp i-be iaaa iaac iaai iaap iaba iaca iacc iacp iadb iadc iaea iaec iaep iaia iapa iapp ibac ibad ibca ibea ibec ibed ibia ibid ibie icaa icab icac icad icai icap icbc icbd icbp icca iccb iccc icci iccp icdc icdd icde icdp icea icec iced icee icpa icpc icpd idad idae idbe idca idce idda idea idec ided idee idia idic idid idie ieac iecc ieie iepa iiac iica iicd iida iide iied iiie iiii iipa ipac ipad ipba ipca ipcc ipce ipdc ipdi ipea ipec ipid ipie ippa ippc paap paba paca pacd pace paci pada padd pade padi paea paec paep paia paib paid paie paip papa papb pape papi papp pbac pbcc pbed pbpa pcaa pcad pcae pcap pcba pcbc pcca pccc pcce pcea pcep pcia pcip pcpb pcpp pdac pdca pdci pdcp pdea pdic pdpa peab peac peai peap peba peca pece peci ped- peda pede pedi peec peed peep peia peip pepa pepd pepe pepi piai pibb pibi pica picc pice pici pida pide piea pied piep piia piip pipa pipe pipi pipp ppac ppad ppap ppcc ppcd ppci ppib ppic ppid ppie pppa pppd pppp