a-ii aaaa aaab aaac aaai aaap aaas aaba aabb aabc aabi aabp aaca aacb aacc aaci aaco aacp aacs aaib aaic aaii aais aaoo aapa aapc aapi aapo aaps aasa aasc aasi aass abaa abab abac abai abap abas abb- abba abbb abbi abbo abbs abca abcb abcc abci abcp abcs abia abib abic abis aboa abob aboo abos abpa abpc abpi abpp abps abs- absa absi absp abss acaa acab acac acai acap acas acba acca accc acci acco accp accs aci- acia acic acip acis acoa acop acos acpa acpi acps acsa acsc acsi acss aiai aias aiba aibo aica aicc aicp aics aiia aiib aiic aioc aioi aipa aipi aips aisa aisb aisi aiso aoba aoca aocs aopo aosp aoss apac apai apao apap apas apba apbs apca apcb apcc apco apcs api- apia apic apio apip apis apo- apoc apoo apop apos appa appc apps apsa apsi apso apss asaa asab asac asai asao asap asas asba asbo asc- asca ascb ascc asci asco ascp asia asic asii asio asip asis asob asoc asoi asop asos aspa aspc aspi aspo asps assa assc assi asso assp asss ba-i baaa baas baba babb babi babo babs bac- baca bacc baci baco bacs baia baib baic baio bais baos bapa bapc bapi bapp baps basa basc basi baso bass bbas bbbb bbbs bbci bcaa bcap bcas bcbc bcbp bcbs bcca bccc bcci bccs bcia bcis bcos bcpp bcps bcsa bcsc bcss biao biap bias biba bibb bibi bibo bibs bica bicc bici bico bics biis bio- bioc bioi bios bipa bipp bips bis- bisa bisc biso bisp biss boab boac boai boas boba bobb bobi bobo bobs boca boco bocs boi- boii bois boob booc boop boos bopa bopp bops bosa bosc bosi boso boss bpai bpcp bpsa bsaa bsac bsap bsas bsci bscp bscs bsic bsos bspp bssc c-bo caaa caab caac caap caas caba cabi cabo cabs cac- caca cacc caci caco caia caib caic caio caip cais caoi caos capa capb capc capi capo capp caps casa casb casc casi caso casp cass cbac cbbc cbbs cbca cbcc cbcp cbcs cbia cbpc cbpp cbsa cbsc cbsi ccaa ccab ccac ccai ccap ccas ccba ccbc ccca cccb cccc ccci cccp cccs ccic ccii ccip ccis ccob ccoc ccpa ccpp ccps ccsa ccsi ccsp ccss ciaa ciao cias ciba cibc cibi cibo cica cicc cici cico cics ciia ciii ciis ciob cios cipa cipo cipp cips cis- cisa cisc cisp ciss coai coas coba cobb cobi cobo cobs coca coco cocp coia coip cois coob coop coos copa copi copo copp cops cosa cosc cosi coso cosp coss cpaa cpac cpap cpas cpbc cpca cpcs cpia cpic cpio cpos cppa cpps cpsa cpsc cpso csaa csab csac csao csas cscb cscc csci csco cscs csia csib csio csis csob csos cspa cspb cspc cspi csps cssa iaaa iaac iaai iaap iaas iaba iaca iacc iacp iacs iaia iais iapa iapp iaps iasa iasc iasi iaso iasp ibac ibas ibca ibcs ibia ibis ibos ibsa ibss icaa icab icac icai icao icap icas icbc icbp icbs icca iccb iccc icci icco iccp iccs icis icoc icos icpa icpc icpo icps icsa icsb icsc icsi icsp icss iiac iias iica iiii iiio iiis iioi iioo iiop iios iipa iisc iisi iisp ioba iobi ioci iocp ioii ioio iooi iooo ioos iops ioso ipac ipas ipba ipca ipcc ipcs ipop ipos ippa ippc ippo ipsa ipsc ipsi ipso ipsp ipss is-a isac isai isao isas isba isca iscc isci isco iscp iscs isia isic isis iso- isoc isop isos ispa ispc isps issa issc issi isso issp isss oaic oais oapi oaps oasc oasi oass obai obas obba obbo obia obis oboi obos obss ocab ocac ocap ocas ocbc occa occc occi ocis ocos ocpa ocpp ocsa oiba oici oiii oios oipc oisc ooaa ooba oobi ooia oooo ooos oops oosa oosi opap opca opia opic opii opio opis opo- opos oppa oppi oppo opps opsa opsi osai osap osas osba osbp osca oscc osci osco osia osii osip osis osoi osoo osos ossa ossb ossi osso paap paas paba paca paci paco pacs paia paib paio paip pais paoc paos papa papb papi papp paps pasa pasc pasi paso pasp pass pbac pbcc pboc pbpa pbsa pbsp pcaa pcap pcas pcba pcbc pcbs pcca pccc pccs pcia pcip pcoa pcos pcpb pcpp pcps pcsa pcso piai piao pias pibb pibi pica picc pici pico pics piia piip piob pipa pipi pipo pipp pips pisa pisi piso piss poas poba pobo pobs poca poco pocs poia poio pois poop poos pop- popa popc popi popo popp pops posa posb posi poso poss ppac ppap ppcc ppci ppcs ppib ppic ppoa ppos pppa pppo pppp ppps ppss psac psap psas psca psci psco psia psip psis psoa psoc psoi psos pspi pspp psps pssa pssc psso s-ib s-ic s-ii s-os sa-c saab saac saap saas saba sabb sabc sabi sabo sabs saca sacc saci saco sacs saia saic saip sais saoi saos sapa sapi sapo sapp saps sasa sasc sasi saso sass sbaa sbac sbai sbas sbbs sbca sbcc sbcs sbia sbic sbsa sbsi sbsp scaa scab scac scai scap scas scba scbi sccc sccp sccs sci- scia scic scio scip scis scob scoo scop scpa scpb scpi scpo scps scsa scsc scsi scso siaa siab siac siai sias siba sibc sibi sibo sibs sica sicc sici sico sicp sics siop sios sipa sipc sipi sipo sipp sips sisa sisc sisi siss soap soas soba sobo sobp sobs soca soci soco socs soia soic sois soop soos sopa sopi sopo sopp sops sosa sosi soso soss sp-a spac spap spas spca spcc spco spcs spia spib spic spio spip spis spoc spoo spop spos spps spsa spso spsp spss ssaa ssab ssac ssao ssap ssas ssca sscc ssci sscp sscs ssis ssoc ssop sspa sspc sspo ssps sssa sssb sssc sssi ssss