a-ii aaaa aaab aaac aaai aaas aaba aabb aabc aabi aabt aaca aacb aacc aaci aaco aacs aact aaib aaic aaii aais aaoo aasa aasc aasi aass aast aata aatc aatt abaa abab abac abai abas abat abb- abba abbb abbi abbo abbs abbt abca abcb abcc abci abcs abct abia abib abic abis abit aboa abob aboo abos abot abs- absa absi abss abta abts ac-t acaa acab acac acai acas acat acba acca accc acci acco accs acct aci- acia acic acis acoa acos acot acsa acsc acsi acss acst acta actc acti acto acts actt aiai aias aiba aibo aica aicc aics aiia aiib aiic aioc aioi aisa aisb aisi aiso aist aita aiti aits aitt aoba aoca aocs aoss aotc asaa asab asac asai asao asas asat asba asbo asc- asca ascb ascc asci asco asct asia asic asii asio asis asit asob asoc asoi asos asot assa assc assi asso asss asst asta astb astc asti asto asts at-t ataa atab atac atai atas atat atbs atca atcc atco atcs atia atic atis atit atob atoc atoi atos atot atsb atsc atsi atst atta atti atto atts ba-i baaa baas baat baba babb babi babo babs bac- baca bacc baci baco bacs bact baia baib baic baio bais bait baos basa basc basi baso bass bast bata batc bati bato bats batt bbas bbbb bbbs bbci bcaa bcas bcat bcbc bcbs bcca bccc bcci bccs bcia bcis bcit bcos bcsa bcsc bcss bctc bcts biao bias biat biba bibb bibi bibo bibs bica bicc bici bico bics biis bio- bioc bioi bios biot bis- bisa bisc biso biss bist bita bitc bito bits bitt boab boac boai boas boat boba bobb bobi bobo bobs boca boco bocs boi- boii bois boit boob booc boos boot bosa bosc bosi boso boss bost bota botb boti boto bots bott bsaa bsac bsas bsat bsci bscs bsic bsos bssc bsts btaa btcc btcs btob btss bttb c-bo caaa caab caac caas caat caba cabi cabo cabs cac- caca cacc caci caco caia caib caic caio cais cait caoi caos casa casb casc casi caso cass cast cat- cata catb catc cati cato cats catt cbac cbat cbbc cbbs cbca cbcc cbcs cbct cbia cbit cbot cbsa cbsc cbsi cbta cbtc ccaa ccab ccac ccai ccas ccat ccba ccbc ccca cccb cccc ccci cccs ccic ccii ccis ccob ccoc ccsa ccsi ccss ccst cctb cctc cctt ciaa ciao cias ciat ciba cibc cibi cibo cica cicc cici cico cics cict ciia ciii ciis ciit ciob cios cis- cisa cisc ciss cist cita citb citi cito cits citt coai coas coat coba cobb cobi cobo cobs coca coco coct coia cois coit coob coos coot cosa cosc cosi coso coss cost cota cotb cotc coti coto cots cott csaa csab csac csao csas csat cscb cscc csci csco cscs csia csib csio csis csit csob csos csot cssa csta cstc csto csts ctab ctba ctbi ctbs ctca ctia ctic ctos ctot ctsa ctsc ctss ctta ctts iaaa iaac iaai iaas iaat iaba iaca iacc iacs iact iaia iais iasa iasc iasi iaso iata iatc iati ibac ibas ibat ibca ibcs ibia ibis ibos ibot ibsa ibss ibtb ibtc ibts icaa icab icac icai icao icas icat icbc icbs icca iccb iccc icci icco iccs icct icis icoc icos icsa icsb icsc icsi icss icst icta icts iiac iias iica iiii iiio iiis iiit iioi iioo iios iisc iisi iist iita iitt ioba iobi ioci ioii ioio ioit iooi iooo ioos ioso iota ioto is-a isac isai isao isas isat isba isbt isca iscc isci isco iscs isct isia isic isis isit iso- isoc isos issa issc issi isso isss ista istc isti isto ists itaa itac itai itas itat itbs itcs itia itic itis itoi itoo itos itsa itsi itso itta itto oaic oais oasc oasi oass oast oats obai obas obba obbo obia obis obit oboi obos obot obss obst obts ocab ocac ocas ocat ocbc occa occc occi occt ocis ocos ocsa oct- octa octi octo octs oiba oici oiii oios oisc oist oita oitc oiti ooaa ooba oobi ooia oooo ooos oosa oosi oost ootb oots osai osas osat osba osca oscc osci osco osia osii osis osoi osoo osos ossa ossb ossi osso osta ostc osti osts otac otas otbs otic otis otit oto- otoo otos otsa otso otta otti otto otts s-ib s-ic s-ii s-os sa-c saab saac saas saat saba sabb sabc sabi sabo sabs saca sacc saci saco sacs sact saia saic sais sait saoi saos sasa sasc sasi saso sass sast sata satb satc sati sato sats satt sbaa sbac sbai sbas sbbs sbca sbcc sbcs sbct sbia sbic sbot sbsa sbsi sbst sbtc scaa scab scac scai scas scat scba scbi sccc sccs scct sci- scia scic scio scis scit scob scoo scot scsa scsc scsi scso scst sctc scto scts siaa siab siac siai sias siat siba sibc sibi sibo sibs sica sicc sici sico sics siit sios siot sisa sisc sisi siss sist sit- sita sitc siti sito sits sitt soas soat soba sobo sobs sobt soca soci soco socs soia soic sois soit soos soot sosa sosi soso soss sost sota sotc soto sots ssaa ssab ssac ssao ssas ssat ssca sscc ssci sscs ssis ssit ssoc ssot sssa sssb sssc sssi ssss ssta sstb sstc ssts stab stac stai stas stat stbc stbs stca stcc stcs stia stib stic stio stis stit stoa stob stoo stos stot stsi stss sttc taa- taas taat taba tabb tabc tabi tabo tabs taca tacc taci taco tacs tact taia taio tais tait taoa taos tasa tasb tasc tasi tass tast tata tatb tati tato tats tatt tbas tbbs tbca tbcb tbcc tbit tbst tbta tcbs tcca tccc tcos tctc tcts tiaa tiab tiao tias tiba tibi tibs tica ticc tico tics tiit tios tisa tisb tisi tiso tiss tist tita titc titi tito tits titt toab toas toat toba tobi