-ic a-a a-b a-c a-i aaa aab aac aai aak aap aas aax ab- aba abb abc abi abk abp abs abx ac- aca acb acc aci ack acp acs acx ai- aia aib aic aii aik aip ais aix aka akb akc aki akk akp aks ap- apa apb apc api apk app aps apx as- asa asb asc asi ask asp ass asx ax- axa axi axk axp axs axx b-p baa bab bac bai bak bap bas bax bba bbb bbc bbi bbk bbp bbs bbx bca bcb bcc bci bck bcp bcs bcx bi- bia bib bic bii bik bip bis bix bka bkb bkc bkk bkp bks bkx bpa bpb bpc bpi bpp bps bpx bsa bsb bsc bsi bsk bsp bss bsx bxb bxi bxx c-- caa cab cac cai cak cap cas cax cba cbb cbc cbi cbk cbp cbs cbx cca ccb ccc cci cck ccp ccs ccx ci- cia cib cic cii cik cip cis cix cka ckb ckc cki cks ckx cpa cpb cpc cpi cpk cpp cps cpx csa csb csc csi csk csp css csx cxc cxi cxk cxp cxs cxx ia- iaa iab iac iai iap ias iba ibb ibc ibi ibk ibp ibs ibx ica icb icc ici ick icp ics iia iib iic iii iip iis iix ika ikb ikc iki ikk iks ikx ipa ipb ipc ipi ipp ips ipx is- isa isb isc isi isk isp iss ixc ixi ka- kaa kab kac kai kak kap kas kax kba kbb kbc kbi kbk kbp kbs kbx kca kcb kcc kci kck kcp kcs kcx kia kib kic kii kik kip kis kix kkb kkc kki kkk kkp kks kpa kpc kpi kpk kpp kps ksa ksb ksc ksi ksk ksp kss p-p paa pab pac pai pak pap pas pax pba pbb pbc pbi pbk pbp pbs pbx pca pcb pcc pci pck pcp pcs pcx pia pib pic pii pik pip pis pix pka pkb pkc pki pkp pks ppa ppb ppc ppi ppk ppp pps ppx ps- psa psb psc psi psk psp pss psx pxc pxk pxs saa sab sac sai sak sap sas sax sba sbb sbc sbi sbk sbp sbs sbx sca scb scc sci sck scp scs scx sia sib sic sii sik sip sis six sk- ska skb skc ski skk skp sks skx spa spb spc spi spk spp sps spx ss- ssa ssb ssc ssi ssk ssp sss ssx sxc sxi sxs xaa xac xak xap xas xbc xbx xcb xci xcp xcx xia xic xii xis xix xkb xks xpa xpb xpc xpp xps xsa xsb xsc xsi xsp xss xxi xxp xxx

a-ak a-ii aaaa aaab aaac aaai aaap aaas aaba aabb aabc aabi aabp aaca aacb aacc aaci aack aacp aacs aaib aaic aaii aais aaka aapa aapc aapi aaps aasa aasc aasi aass abaa abab abac abai abak abap abas abax abb- abba abbb abbi abbs abca abcb abcc abci abcp abcs abia abib abic abis abpa abpc abpi abpp abps abs- absa absi absp abss acaa acab acac acai acap acas acba acca accc acci accp accs aci- acia acic acip acis acks acpa acpi acps acsa acsc acsi acss aiai aias aiba aica aicc aicp aics aiia aiib aiic aika aiki aiks aipa aipi aips aisa aisb aisi aisk aixa aixi akaa akai akap akas akca akia akik akis akka akki aksa aksi apac apai apak apap apas apax apba apbs apca apcb apcc apcs api- apia apic apip apis apix appa appc apps appx apsa apsi apss apxs asaa asab asac asai asak asap asas asba asc- asca ascb ascc asci ascp ascx asia asic asii asik asip asis asix aska aski asks aspa aspc aspi asps assa assc assi assk assp asss axi- axia axis axps ba-i ba-x baaa baak baas baba babb babi babs bac- baca bacc baci back bacs baia baib baic baik bais baix bak- baka baki baks bapa bapc bapi bapp baps basa basc basi bask bass baxi bbas bbbb bbbs bbci bcaa bcap bcas bcbc bcbp bcbs bcca bccc bcci bccs bcia bcis bcpp bcps bcsa bcsc bcss biak biap bias biba bibb bibi bibs bica bicc bici bick bics biis bipa bipp bips bis- bisa bisc bisk bisp biss bixa bixi bksp bpai bpcp bpsa bsaa bsac bsap bsas bsci bscp bscs bsic bsix bspp bssc caaa caab caac caap caas caba cabi cabs cac- caca cacc caci cack caia caib caic caik caip cais caix caka capa capb capc capi capp caps capx casa casb casc casi cask casp cass caxa cbac cbax cbbc cbbs cbca cbcc cbcp cbcs cbia cbka cbpc cbpp cbsa cbsc cbsi cbxa ccaa ccab ccac ccai ccap ccas ccba ccbc ccca cccb cccc ccci cccp cccs ccic ccii ccip ccis ccix ccpa ccpp ccps ccsa ccsi ccsp ccss ccxi ciaa ciak cias ciba cibc cibi cica cicc cici cics ciia ciii ciis cika cipa cipp cips cis- cisa cisc cisk cisp ciss cixi ckac ckbc ckbi ckbx ckck ckcs ckcx ckpc cksa cksb cpaa cpac cpap cpas cpbc cpca cpcs cpia cpic cpix cppa cpps cpsa cpsc cpsk cpsx csaa csab csac csak csas cscb cscc csci cscs csia csib csik csis csix cska csks cspa cspb cspc cspi csps cssa cxii cxix cxxi cxxx iaaa iaac iaai iaap iaas iaba iaca iacc iacp iacs iaia iais iapa iapp iaps iapx iasa iasc iasi iask iasp ibac ibas ibca ibcs ibia ibis ibsa ibss icaa icab icac icai icap icas icbc icbp icbs icca iccb iccc icci iccp iccs icis icks icpa icpc icps icsa icsb icsc icsi icsp icss iiac iias iica iiii iiis iipa iisc iisi iisp ikki ipac ipak ipas ipba ipbk ipca ipcc ipcs ipix ippa ippc ipsa ipsc ipsi ipsp ipss is-a isac isai isak isas isba isbx isca iscc isci iscp iscs isia isic isis iska ispa ispc isps issa issc issi issp isss ixia ixxi k-ci kaaa