a-ii aaaa aaab aaac aaai aaap aaba aabb aabc aabi aabp aabt aaca aacb aacc aaci aaco aacp aact aaib aaic aaii aaoo aapa aapc aapi aapo aapt aata aatc aatt abaa abab abac abai abap abat abb- abba abbb abbi abbo abbt abca abcb abcc abci abcp abct abia abib abic abit aboa abob aboo abot abpa abpc abpi abpp abta ac-t acaa acab acac acai acap acat acba acca accc acci acco accp acct aci- acia acic acip acoa acop acot acpa acpi acpt acta actc acti acto actt aiai aiba aibo aica aicc aicp aiia aiib aiic aioc aioi aipa aipi aita aiti aitt aoba aoca aopo aotc apac apai apao apap apat apba apca apcb apcc apco api- apia apic apio apip apit apo- apoc apoo apop apot appa appc appt apta aptc apti aptt at-t ataa atab atac atai atap atat atca atcc atco atia atic atip atit atob atoc atoi atop atot atta atti atto attp ba-i baaa baat baba babb babi babo bac- baca bacc baci baco bact baia baib baic baio bait bapa bapc bapi bapp bapt bata batc bati bato batt bbbb bbci bcaa bcap bcat bcbc bcbp bcca bccc bcci bcia bcit bcpp bctc biao biap biat biba bibb bibi bibo bica bicc bici bico bio- bioc bioi biot bipa bipp bita bitc bito bitt boab boac boai boat boba bobb bobi bobo boca boco boi- boii boit boob booc boop boot bopa bopp bota botb boti boto bott bpai bpcp bpot bpti btaa btbp btcc btob bttb c-bo caaa caab caac caap caat caba cabi cabo cac- caca cacc caci caco caia caib caic caio caip cait caoi capa capb capc capi capo capp capt cat- cata catb catc cati cato catt cbac cbat cbbc cbca cbcc cbcp cbct cbia cbit cbot cbpc cbpp cbta cbtc ccaa ccab ccac ccai ccap ccat ccba ccbc ccca cccb cccc ccci cccp ccic ccii ccip ccob ccoc ccpa ccpp cctb cctc cctt ciaa ciao ciat ciba cibc cibi cibo cica cicc cici cico cict ciia ciii ciit ciob cipa cipo cipp cita citb citi cito citp citt coai coat coba cobb cobi cobo coca coco cocp coct coia coip coit coob coop coot copa copi copo copp copt cota cotb cotc coti coto cott cpaa cpac cpap cpbc cpca cpia cpic cpio cppa cptp ctab ctba ctbi ctca ctcp ctia ctic ctot ctpo ctpp ctta iaaa iaac iaai iaap iaat iaba iaca iacc iacp iact iaia iapa iapp iapt iata iatc iati ibac ibat ibca ibia ibot ibtb ibtc icaa icab icac icai icao icap icat icbc icbp icca iccb iccc icci icco iccp icct icoc icpa icpc icpo icta ictp iiac iica iiii iiio iiit iioi iioo iiop iipa iita iitt ioba iobi ioci iocp ioii ioio ioit iooi iooo iota ioto ipac ipat ipba ipca ipcc ipct ipop ippa ippc ippo ipta iptc ipto itaa itac itai itap itat itia itic itoi itoo itpa itpc itta itto oaic oapi obai obba obbo obia obit oboi obot ocab ocac ocap ocat ocbc occa occc occi occt ocpa ocpp oct- octa octi octo oiba oici oiii oipc oita oitc oiti ooaa ooba oobi ooia oooo ootb ootp opap opca opia opic opii opio opit opo- oppa oppi oppo opti opto otac otap otic otit oto- otoo otpp otta otti otto paap paat paba pabt paca paci paco pact paia paib paio paip pait paoc papa papb papi papp pata pati pato patt pbac pbcc pboc pbpa pcaa pcap pcba pcbc pcca pccc pcia pcip pcoa pcpb pcpp piai piao piat pibb pibi pica picc pici pico pict piia piip piob piot pipa pipi pipo pipp pita piti pito pitt poat poba pobo poca poco poia poio poop poot pop- popa popc popi popo popp popt pota potc poti poto pott ppac ppap ppcc ppci ppib ppic ppoa pppa pppo pppp ppta pptt ptab ptca ptcc ptop pttc taa- taat taba tabb tabc tabi tabo taca tacc taci taco tact taia taio taip tait taoa tapa tapi tapo tapp tapt tata tatb tati tato tatt tbca tbcb tbcc tbit tbta tbtp tcap tcca tccc tcpa tcpo tctc tiaa tiab tiao tiba tibi tica ticc tico tiit tiop tip- tipa tipc tipi tipo tipp tipt tita titc titi tito titp titt toab toat toba tobi tobo tobt toca toci toco toit tooa toot top- topa topi topo topp topt tota totc toti toto tott tpac tpap tpcp tpia tppa tppp tptp ttab ttbb ttcp ttop tttt