-ic a-a a-b a-c a-i aaa aab aac aag aai aao aas ab- aba abb abc abg abi abo abs ac- aca acb acc acg aci aco acs ag- aga agb agc agg agi ago ags ai- aia aib aic aig aii aio ais aoa aob aoc aog aoi aoo aos as- asa asb asc asg asi aso ass baa bab bac bag bai bao bas bba bbb bbc bbg bbi bbo bbs bca bcb bcc bcg bci bco bcs bga bgb bgc bgg bgi bgo bgs bi- bia bib bic big bii bio bis boa bob boc bog boi boo bos bsa bsb bsc bsg bsi bso bss c-- caa cab cac cag cai cao cas cba cbb cbc cbg cbi cbo cbs cca ccb ccc ccg cci cco ccs cga cgb cgc cgg cgi cgo cgs ci- cia cib cic cig cii cio cis co- coa cob coc cog coi coo cos csa csb csc csg csi cso css gaa gab gac gag gai gao gas gba gbc gbg gbi gbo gbs gca gcb gcc gcg gci gco gcs gga ggb ggc ggg ggi ggo ggs gia gib gic gig gii gio gis goa gob goc gog goi goo gos gsa gsb gsc gsg gsi gso gss ia- iaa iab iac iag iai iao ias iba ibb ibc ibg ibi ibo ibs ica icb icc icg ici ico ics iga igb igc igg igi igo igs iia iib iic iii iio iis io- ioa iob ioc iog ioi ioo ios is- isa isb isc isg isi iso iss o-i oaa oab oac oag oai oao oas ob- oba obb obc obg obi obo obs oc- oca ocb occ ocg oci oco ocs oga ogc ogg ogi ogo ogs oia oib oic oii oio ois oo- ooa oob ooc oog ooi ooo oos os- osa osb osc osg osi oso oss saa sab sac sag sai sao sas sba sbb sbc sbg sbi sbo sbs sca scb scc scg sci sco scs sga sgb sgc sgg sgi sgo sgs sia sib sic sig sii sio sis soa sob soc sog soi soo sos ss- ssa ssb ssc ssg ssi sso sss

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 abag abai abas abb- abba abbb abbi abbo abbs abca abcb abcc abci abcs abia abib abic abig abis aboa abob aboo abos abs- absa absi abss acaa acab acac acag acai acas acba acca accc acci acco accs acga acgi acgs aci- acia acic acis acoa acog acos acsa acsc acsi acss ag-o agac agag agai agao agas agba agbo agca agcc agco agga aggi agia agib agic agig agii agio agis agob agog agoo agos agsa agsg aiai aias aiba aibo aica aicc aics aiga aigo aiia aiib aiic aioc aioi aisa aisb aisg aisi aiso aoba aoca aocs aoss asaa asab asac asag asai asao asas asba asbo asc- asca ascb ascc asci asco asia asic asii asio asis asob asoc asog asoi asos assa assc assi asso asss ba-i baaa baas baba babb babi babo babs bac- baca bacc baci baco bacs baga bagg bagi bago bags baia baib baic baig baio bais baos basa basc basi baso bass bbas bbbb bbbs bbci bbga bcaa bcas bcbc bcbg bcbs bcca bccc bcci bccs bcgs bcia bcis bcos bcsa bcsc bcss bgca bggs bgia biao bias biba bibb bibi bibo bibs bica bicc bicg bici bico bics biga bigb bigc bigg bigo bigs biis bio- bioc biog bioi bios bis- bisa bisc biso biss boab boac boag boai boas boba bobb bobi bobo bobs boca boco bocs boga bogg bogi bogo bogs boi- boii bois boob booc boog boos bosa bosc bosi boso boss bsaa bsac bsas bsci bscs bsgs bsic bsos bssc c-bo caaa caab caac caas caba cabg cabi cabo cabs cac- caca cacc caci caco caga cagg cagi cago cags caia caib caic caio cais caoi caos casa casb casc casi caso cass cbac cbbc cbbs cbca cbcc cbcs cbga cbgb cbia cbsa cbsc cbsi ccaa ccab ccac ccag ccai ccas ccba ccbc ccca cccb cccc ccci cccs ccga ccgc ccgs ccic ccii ccis ccob ccoc ccsa ccsg ccsi ccss cgac cgas cgcc cgcg cggs cgis cgsb cgss ciaa ciao cias ciba cibc cibi cibo cica cicc cici cico cics ciga cigi cigs ciia ciii ciis ciob cios cis- cisa cisc ciss coag coai coas coba cobb cobi cobo cobs coca coco cogi cogo cogs coia cois coob coos cosa cosc cosi coso coss csaa csab csac csao csas cscb cscc csci csco cscs csia csib csio csis csob csos cssa gaas gaba gabb gabi gabo gabs gaga gagg gagi gago gags gaia gaig gais gaos gasa gasb gasc gasi gaso gass gbag gbas gbbo gbbs gc-c gcaa gcbc gccc gccs gcic gcii gcoa gcos gcss gggg ggss giaa giac giai gias giba gibb gibs gica giga gigg gigi gigo gigs giis giog gioi gisa giss goai goas goba gobi gobo gobs goca goga gogi gogo gogs gois goog gooi goos gosi goso goss gsab gsis gsoc gsos i-go iaaa iaac iaai iaas iaba iaca iacc iacs iago iags iaia iais iasa iasc iasi iaso ibac ibas ibca ibcs ibga ibia ibis ibos ibsa ibss icaa icab icac icag icai icao icas icbc icbs icca iccb iccc icci icco iccs icga icgc icis icoc icos icsa icsb icsc icsi icss igac igas igba igbc igbo igcc igga iggs igia igis igoo igso iiac iias iica iiii iiio iiis iioi iioo iios iisc iisi ioba iobi iocg ioci ioii ioio iooi iooo ioos ioso is-a isac isai isao isas isba isca iscc isci isco iscs isgc isia isic isis iso- isoc isos issa issc issi isso isss oaic oais oasc oasi oass obai obas obba obbo obia obis oboi obos obss ocab ocac ocas ocbc occa occc occi ocga ocis ocos ocsa ogai ogb ogba