-ic a-a a-b a-c a-i aaa aab aac aag aai aar aas ab- aba abb abc abg abi abr abs ac- aca acb acc acg aci acr acs ag- aga agb agc agg agi agr ags ai- aia aib aic aig aii air ais ar- ara arb arc arg ari arr ars as- asa asb asc asg asi asr ass baa bab bac bag bai bar bas bba bbb bbc bbg bbi bbr bbs bca bcb bcc bcg bci bcr bcs bga bgb bgc bgg bgi bgr bgs bi- bia bib bic big bii bir bis bra brb brg bri brr brs bsa bsb bsc bsg bsi bsr bss c-- caa cab cac cag cai car cas cba cbb cbc cbg cbi cbr cbs cca ccb ccc ccg cci ccr ccs cga cgb cgc cgg cgi cgr cgs ci- cia cib cic cig cii cir cis cra crb crc crg cri crr crs csa csb csc csg csi csr css gaa gab gac gag gai gar gas gba gbc gbg gbi gbr gbs gca gcb gcc gcg gci gcr gcs gga ggb ggc ggg ggi ggr ggs gia gib gic gig gii gir gis gra grb grc grg gri grr grs gsa gsb gsc gsg gsi gsr gss ia- iaa iab iac iag iai iar ias iba ibb ibc ibg ibi ibr ibs ica icb icc icg ici icr ics iga igb igc igg igi igr igs iia iib iic iii iir iis ir- ira irb irc irg iri irr irs is- isa isb isc isg isi isr iss ra- raa rab rac rag rai rar ras rba rbb rbc rbg rbi rbr rbs rca rcb rcc rcg rci rcr rcs rga rgb rgc rgg rgi rgr rgs ria rib ric rig rii rir ris rra rrb rrc rrg rri rrr rrs rsa rsb rsc rsg rsi rsr rss saa sab sac sag sai sar sas sba sbb sbc sbg sbi sbr sbs sca scb scc scg sci scr scs sga sgb sgc sgg sgi sgr sgs sia sib sic sig sii sir sis sr- sra srb src srg sri srr srs ss- ssa ssb ssc ssg ssi ssr sss

a-ii aaaa aaab aaac aaai aaar aaas aaba aabb aabc aabi aaca aacb aacc aaci aacr aacs aaib aaic aaii aais aara aarc aari aars aasa aasc aasi aass abaa abab abac abag abai abar abas abb- abba abbb abbi abbr abbs abca abcb abcc abci abcr abcs abia abib abic abig abir abis abra abrc abri abrs abs- absa absi abss acaa acab acac acag acai acar acas acba acca accc acci accs acga acgi acgr acgs aci- acia acic acir acis acr- acra acrc acri acrr acrs acsa acsc acsi acss agac agag agai agar agas agba agca agcc agga aggi agia agib agic agig agii agir agis agra agri agsa agsg aiai aias aiba aica aicc aicr aics aiga aiia aiib aiic aiir aira airi airs aisa aisb aisg aisi aisr arab arac arag arai arar aras arba arbi arbs arc- arca arci arcs arga argb argi args aria arib arig arii aris arr- arra arrc arrg arri arrr arrs ars- arsa arsc arsi asaa asab asac asag asai asar asas asba asc- asca ascb ascc asci ascr asia asic asii asir asis asra asrc asrg asrs assa assc assi assr asss ba-i baaa baar baas baba babb babi babr babs bac- baca bacc baci bacs baga bagg bagi bags baia baib baic baig bair bais bar- bara barb barc barg bari barr bars basa basc basi bass bbas bbbb bbbs bbci bbga bbrc bbrg bcaa bcar bcas bcbc bcbg bcbs bcca bccc bcci bccs bcgs bcia bcis bcra bcrs bcsa bcsc bcss bgca bggs bgia biar bias biba bibb bibi bibs bica bicc bicg bici bics biga bigb bigc bigg bigs biis bira birb birg biri birr birs bis- bisa bisc biss brab brac brag brai bras brca brcb bria bric brig bris brrr brrs brsb brsr bsaa bsac bsas bsci bscs bsgs bsic bsra bssc caaa caab caac caas caba cabg cabi cabs cac- caca cacc caci cacr caga cagg cagi cagr cags caia caib caic cair cais cara carb carc cari carr cars casa casb casc casi casr cass cbac cbar cbbc cbbs cbca cbcc cbcr cbcs cbga cbgb cbia cbir cbsa cbsc cbsi ccaa ccab ccac ccag ccai ccar ccas ccba ccbc ccca cccb cccc ccci cccs ccga ccgc ccgs ccic ccii ccir ccis ccra ccrc ccrg ccri ccrs ccsa ccsg ccsi ccss cgac cgas cgcc cgcg cggs cgis cgsb cgss ciaa ciar cias ciba cibc cibi cica cicc cici cicr cics ciga cigi cigs ciia ciii ciis cira cirb circ ciri cirr cirs cis- cisa cisc cisr ciss crab crac crag crai crar cras crbc crca crcc crcr crgs cria crib cric crig cris crsa crss csaa csab csac csar csas cscb cscc csci cscr cscs csia csib csir csis csra csrc csrs cssa cssr gaar gaas gaba gabb gabi gabr gabs gaga gagg gagi gags gaia gaig gair gais gara garb garg gari garr gars gasa gasb gasc gasi gasr gass gbag gbas gbbs gc-c gcaa gcbc gccc gccs gcic gcii gcrg gcss gggg ggss giaa giac giai gias giba gibb gibs gica gicr giga gigg gigi gigs giis gira girg giri girr girs gisa giss grab grac grai gras grbr grcc gria grib gric grig gris grrr grrs grss gsab gsis iaaa iaac iaai iaas iaba iaca iacc iacr iacs iags iaia iais iara iarc iars iasa iasc iasi iasr ibac ibar ibas ibca ibcs ibga ibia ibis ibra ibrc ibri ibsa ibss icaa icab icac icag icai icar icas icbc icbs icca iccb iccc icci iccr iccs icga icgc icis icra icrc icrr icrs icsa icsb icsc icsi icsr icss igac igar igas igba igbc igcc igga iggs igia igis igra igri iiac iias iica iiii iiis iira iirc iirs iisc iisi iisr irac irai irar iras irca ircc ircg ircs irgs iri- iria iric irig iris irra irrc