a-ii aaaa aaab aaac aaai aaas aaba aabb aabc aabi aaca aacb aacc aaci aaco aacs aaib aaic aaii aais aaoo aasa aasc aasi aass abaa abab abac abai abaj abas abb- abba abbb abbi abbo abbs abca abcb abcc abci abcs abia abib abic abis abjs aboa abob aboo abos abs- absa absi abss acaa acab acac acai acas acba acca accc acci acco accs aci- acia acic acis acoa acos acsa acsc acsi acss aiai aias aiba aibo aica aicc aics aiia aiib aiic aija aioc aioi aisa aisb aisi aisj aiso ajab ajac ajao ajas ajba ajio ajis ajob ajoo ajss aoba aoca aocs aoss asaa asab asac asai asao asas asba asbo asc- asca ascb ascc asci ascj asco asia asic asii asij asio asis asja asob asoc asoi asos assa assc assi asso asss ba-i baaa baas baba babb babi babo babs bac- baca bacc baci baco bacs baia baib baic baio bais baja baji bajs baos basa basc basi baso bass bbas bbbb bbbs bbci bcaa bcas bcbc bcbs bcca bccc bcci bccs bcia bcis bcos bcsa bcsc bcss biaj biao bias biba bibb bibi bibo bibs bica bicc bici bico bics biis bija biji bijs bio- bioc bioi bios bis- bisa bisc biso biss bjcc bjoa boab boac boai boas boba bobb bobi bobo bobs boca boco bocs boi- boii bois boji bojo boob booc boos bosa bosc bosi boso boss bsaa bsac bsas bsci bscs bsic bsos bssc c-bo caaa caab caac caas caba cabi cabo cabs cac- caca cacc caci caco caia caib caic caio cais caja caji caoi caos casa casb casc casi caso cass cbac cbbc cbbs cbca cbcc cbcs cbia cbsa cbsc cbsi ccaa ccab ccac ccai ccas ccba ccbc ccca cccb cccc ccci cccs ccic ccii ccis ccjo ccob ccoc ccsa ccsi ccss ciaa ciao cias ciba cibc cibi cibo cica cicc cici cico cics ciia ciii ciis ciob cios cis- cisa cisc ciss cjbc cjca cjcb cjcj cjcs cjic cjob cjoi cjsb cjss coai coas coba cobb cobi cobo cobs coca coco coia cois cojo coob coos cosa cosc cosi coso coss csaa csab csac csao csas cscb cscc csci csco cscs csia csib csio csis csob csos cssa iaaa iaac iaai iaas iaba iaca iacc iacs iaia iais iasa iasc iasi iaso ibac ibas ibca ibcs ibia ibis ibos ibsa ibss icaa icab icac icai icao icas icbc icbs icca iccb iccc icci icco iccs icis icoc icos icsa icsb icsc icsi icss iiac iias iica iiii iiio iiis iioi iioo iios iisc iisi iisj ijji ioba iobi ioci ioii ioio iooi iooo ioos ioso is-a isac isai isao isas isba isca iscc isci isco iscs isia isic isis iso- isoc isos issa issc issi isso isss jaas jaba jabi jabo jabs jaca jacc jaci jaco jacs jais jaja jaji jasa jasc jaso jass jbaa jbob jcbc jccc jcci jcss jiao jias jibb jibi jibs jiji jisa jisc jiso jjcc joab joao joba jobo jobs joca joco joia joio jois joji jojo joos josa joso joss jsci jsss oaic oais oasc oasi oass obai obas obba obbo obia obis obja oboi obos obss ocab ocac ocas ocbc occa occc occi ocis ocos ocsa oiaj oiba oici oiii oios oisc ojai ojas ojos ooaa ooba oobi ooia ooij ooji oooo ooos oosa oosi osai osas osba osca oscc osci osco osia osii osis osoi osoo osos ossa ossb ossi osso s-ib s-ic s-ii s-os sa-c saab saac saaj saas saba sabb sabc sabi sabo sabs saca sacc saci saco sacs saia saic sais saja saoi saos sasa sasc sasi saso sass sbaa sbac sbai sbas sbbs sbca sbcc sbcs sbia sbic sbsa sbsi scaa scab scac scai scas scba scbi sccc sccs sci- scia scic scio scis scob scoo scsa scsc scsi scso siaa siab siac siai sias siba sibc sibi sibo sibs sica sicc sici sico sics sijo sios sisa sisc sisi siss sjab sjac sjcc sjcs sjis sjoa soas soba sobo sobs soca soci soco socs soia soic sois soja soji soos sosa sosi soso soss ssaa ssab ssac ssao ssas ssca sscc ssci sscs ssis ssoc sssa sssb sssc sssi ssss