-ic a-a a-b a-c a-i a-t aaa aab aac aag aai aao aas aat ab- aba abb abc abg abi abo abs abt ac- aca acb acc acg aci aco acs act ag- aga agb agc agg agi ago ags agt ai- aia aib aic aig aii aio ais ait aoa aob aoc aog aoi aoo aos aot as- asa asb asc asg asi aso ass ast at- ata atb atc atg ati ato ats att baa bab bac bag bai bao bas bat bba bbb bbc bbg bbi bbo bbs bbt bca bcb bcc bcg bci bco bcs bct bga bgb bgc bgg bgi bgo bgs bgt bi- bia bib bic big bii bio bis bit boa bob boc bog boi boo bos bot bsa bsb bsc bsg bsi bso bss bst bta btb btc btg bti bto bts btt c-- caa cab cac cag cai cao cas cat cba cbb cbc cbg cbi cbo cbs cbt cca ccb ccc ccg cci cco ccs cct cga cgb cgc cgg cgi cgo cgs cgt ci- cia cib cic cig cii cio cis cit co- coa cob coc cog coi coo cos cot csa csb csc csg csi cso css cst cta ctb ctc ctg cti cto cts ctt gaa gab gac gag gai gao gas gat gba gbc gbg gbi gbo gbs gbt gca gcb gcc gcg gci gco gcs gct gga ggb ggc ggg ggi ggo ggs ggt gia gib gic gig gii gio gis git goa gob goc gog goi goo gos got gsa gsb gsc gsg gsi gso gss gst gta gtb gtc gtg gti gto gts gtt ia- iaa iab iac iag iai iao ias iat iba ibb ibc ibg ibi ibo ibs ibt ica icb icc icg ici ico ics ict iga igb igc igg igi igo igs igt iia iib iic iii iio iis iit io- ioa iob ioc iog ioi ioo ios iot is- isa isb isc isg isi iso iss ist ita itb itc itg iti ito its itt o-i oaa oab oac oag oai oao oas oat ob- oba obb obc obg obi obo obs obt oc- oca ocb occ ocg oci oco ocs oct oga ogc ogg ogi ogo ogs ogt oia oib oic oii oio ois oit oo- ooa oob ooc oog ooi ooo oos oot os- osa osb osc osg osi oso oss ost ot- ota otb otc otg oti oto ots ott saa sab sac sag sai sao sas sat sba sbb sbc sbg sbi sbo sbs sbt sca scb scc scg sci sco scs sct sga sgb sgc sgg sgi sgo sgs sgt sia sib sic sig sii sio sis sit soa sob soc sog soi soo sos sot ss- ssa ssb ssc ssg ssi sso sss sst sta stb stc stg sti sto sts stt taa tab tac tag tai tao tas tat tba tbb tbc tbg tbi tbo tbs tbt tca tcb tcc tcg tci tco tcs tct tga tgb tgc tgg tgi tgo tgs tgt tia tib tic tig tii tio tis tit to- toa tob toc tog toi too tos tot tsa tsb tsc tsg tsi tso tss tst tta ttb ttc ttg tti tto tts ttt

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 abag abai abas abat abb- abba abbb abbi abbo abbs abbt abca abcb abcc abci abcs abct abia abib abic abig abis abit aboa abob aboo abos abot abs- absa absi abss abta abts ac-t acaa acab acac acag acai acas acat acba acca accc acci acco accs acct acga acgi acgs aci- acia acic acis acoa acog acos acot acsa acsc acsi acss acst acta actc actg acti acto acts actt ag-o agac agag agai agao agas agat agba agbo agca agcc agco agct agga aggi agia agib agic agig agii agio agis agit agob agog agoo agos agot agsa agsg agst agta agts aiai aias aiba aibo aica aicc aics aiga aigo aiia aiib aiic aioc aioi aisa aisb aisg aisi aiso aist aita aiti aits aitt aoba aoca aocs aoss aotc asaa asab asac asag asai asao asas asat asba asbo asc- asca ascb ascc asci asco asct asgt asia asic asii asio asis asit asob asoc asog 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 atgo 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 baga bagg bagi bago bags bagt baia baib baic baig baio bais bait baos basa basc basi baso bass bast bata batc bati bato bats batt bbas bbbb bbbs bbci bbga bcaa bcas bcat bcbc bcbg bcbs bcca bccc bcci bccs bcgs bcia bcis bcit bcos bcsa bcsc bcss bctc bcts bgca bggs bgia bgst biao bias biat biba bibb bibi bibo bibs bica bicc bicg bici bico bics biga bigb bigc bigg bigo bigs bigt biis bio- bioc biog bioi bios biot bis- bisa bisc biso biss bist bita bitc bito bits bitt boab boac boag boai boas boat boba bobb bobi bobo bobs boca boco bocs boga bogg bogi bogo bogs bogt boi- boii bois boit boob booc boog boos boot bosa bosc bosi boso boss bost bota botb boti boto bots bott bsaa bsac bsas bsat bsci bscs bsgs bsic bsos bssc bsts btaa btcc btcs btob btss bttb c-bo caaa caab caac caas caat caba cabg cabi cabo cabs cac- caca cacc caci caco caga cagg cagi cago cags 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 cbga cbgb cbia cbit cbot