-ic a-a a-b a-c a-i aaa aab aac aad aai aao aas ab- aba abb abc abd abi abo abs ac- aca acb acc acd aci aco acs ad- ada adb adc add adi ado ads ai- aia aib aic aid aii aio ais aoa aob aoc aod aoi aoo aos as- asa asb asc asd asi aso ass baa bab bac bad bai bao bas bba bbb bbc bbd bbi bbo bbs bca bcb bcc bcd bci bco bcs bda bdb bdc bdd bdi bdo bds bi- bia bib bic bid bii bio bis boa bob boc bod boi boo bos bsa bsb bsc bsd bsi bso bss c-- caa cab cac cad cai cao cas cba cbb cbc cbd cbi cbo cbs cca ccb ccc ccd cci cco ccs cda cdb cdc cdd cdi cdo cds ci- cia cib cic cid cii cio cis co- coa cob coc cod coi coo cos csa csb csc csd csi cso css daa dab dac dad dai dao das dba dbb dbc dbd dbi dbo dbs dca dcb dcc dcd dci dco dcs dda ddb ddc ddd ddi ddo dds di- dia dib dic did dii dio dis doa dob doc dod doi doo dos dsa dsb dsc dsd dsi dso dss i-d ia- iaa iab iac iad iai iao ias iba ibb ibc ibd ibi ibo ibs ica icb icc icd ici ico ics ida idb idc idd idi ido ids iia iib iic iid iii iio iis io- ioa iob ioc iod ioi ioo ios is- isa isb isc isd isi iso iss o-i oaa oab oac oad oai oao oas ob- oba obb obc obd obi obo obs oc- oca ocb occ ocd oci oco ocs oda odb odc odd odi odo ods oia oib oic oid oii oio ois oo- ooa oob ooc ood ooi ooo oos os- osa osb osc osd osi oso oss saa sab sac sad sai sao sas sba sbb sbc sbd sbi sbo sbs sca scb scc scd sci sco scs sda sdb sdc sdd sdi sdo sds sia sib sic sid sii sio sis soa sob soc sod soi soo sos ss- ssa ssb ssc ssd ssi sso sss

a-do a-ii aaaa aaab aaac aaad aaai aaas aaba aabb aabc aabd aabi aaca aacb aacc aacd aaci aaco aacs aada aadc aadi aads aaib aaic aaii aais aaoo aasa aasc aasd aasi aass abaa abab abac abad abai abas abb- abba abbb abbi abbo abbs abca abcb abcc abcd abci abcs abda abdi abdo abia abib abic abid abis aboa abob abod aboo abos abs- absa absd absi abss acaa acab acac acad acai acas acba acca accc accd acci acco accs acda acdb acdc acdi acds aci- acia acic acid acis acoa acod acos acsa acsc acsd acsi acss adaa adab adac adad adai adao adas adba adbc adbi adcc adci adcs adda addc addd addi addo adds adia adib adic adio adis adob adoc adod adoo ados adsa adsi adso adss aiai aias aiba aibo aica aicc aicd aics aida aidb aidc aidi aids aiia aiib aiic aiid aioc aioi aisa aisb aisd aisi aiso aoba aoca aocs aosd aoss asaa asab asac asad asai asao asas asba asbo asc- asca ascb ascc asci asco asda asdo asds asia asic asii asio asis asob asoc asod asoi asos assa assc assd assi asso asss ba-i baaa baad baas baba babb babi babo babs bac- baca bacc baci baco bacs bada badb badd badi bado bads baia baib baic baid baio bais baos basa basc basi baso bass bbad bbas bbbb bbbs bbci bbdd bbdo bcaa bcas bcbc bcbs bcca bccc bcci bccs bcda bcds bcia bcis bcos bcsa bcsc bcss bdbc bddc bdii bdos bdsd biad biao bias biba bibb bibi bibo bibs bica bicc bici bico bics bida bidi bido bids biis bio- bioc bioi bios bis- bisa bisc bisd biso biss boab boac boad boai boas boba bobb bobi bobo bobs boca boco bocs boda bodb bodi bodo bods boi- boid boii bois boob booc bood boos bosa bosc bosi boso boss bsaa bsac bsas bsbd bsci bscs bsic bsod bsos bssc bssd c-bo c-cd caaa caab caac caas caba cabi cabo cabs cac- caca cacc caci caco cada cadc cadd cadi cado cads caia caib caic caid caio cais caod caoi caos casa casb casc casd casi caso cass cbac cbbc cbbs cbca cbcc cbcs cbdb cbdc cbdi cbdo cbds cbia cbid cbsa cbsc cbsi ccaa ccab ccac ccad ccai ccas ccba ccbc ccca cccb cccc ccci cccs ccdc ccdi ccds ccic ccid ccii ccis ccob ccoc ccod ccsa ccsd ccsi ccss cdaa cdac cdad cdai cdba cdcs cdda cddb cdic cdii cdio cdis cdos cdss ciaa ciao cias ciba cibc cibi cibo cica cicc cici cico cics cida cidc cidi cids ciia ciid ciii ciis ciob cios cis- cisa cisc cisd ciss coad coai coas coba cobb cobi cobo cobs coca coco coda codd codi cods coia cois coob cood coos cosa cosc cosi coso coss csaa csab csac csao csas cscb cscc cscd csci csco cscs csda csdb csia csib csid csio csis csob csos cssa cssd d-bo daab daad daas daba dabb dabo dabs daca daci dacs dada dadi dado dads daia daid daio dais daos dasa dasb dasc dasd dasi dass dbas dbcc dbcs dbos dbsa dbss dcas dcbc dcca dccb dccc dcci dccs dcdb dcds dcia dcii dcio dcis dcos dcsc dcss dddd ddoc ddss dia- diab diac diad diao dias diba dibb dibo dibs dica dici dico dida didi dido dids diii diis dioc dios dis- disa disc disd disi diso diss doab doas doba dobb dobi dobs doca doci doco docs dod- doda dodd dodi dodo dods doid dois doob dood doos dosa dosi doso doss dsac dsba dsbc dscc dscs dsda dsoa dsos dssa dssc dssi iaaa iaac iaai iaas iaba iaca iacc iacs iadb iadc iaia iais iasa iasc iasi iaso ibac ibad ibas ibca ibcs ibdo