-ic a-a a-b a-c a-i a-t aaa aab aac aai aam aar aat ab- aba abb abc abi abm abr abt ac- aca acb acc aci acm acr act ai- aia aib aic aii aim air ait ama amb amc ami amm amr amt ar- ara arb arc ari arm arr art at- ata atb atc ati atm atr att baa bab bac bai bam bar bat bba bbb bbc bbi bbm bbr bbt bca bcb bcc bci bcm bcr bct bi- bia bib bic bii bim bir bit bma bmb bmc bmi bmm bmr bmt bra brb bri brm brr brt bta btb btc bti btm btr btt c-- caa cab cac cai cam car cat cba cbb cbc cbi cbm cbr cbt cca ccb ccc cci ccm ccr cct ci- cia cib cic cii cim cir cit cma cmb cmc cmi cmm cmr cmt cra crb crc cri crm crr crt cta ctb ctc cti ctm ctr ctt ia- iaa iab iac iai iam iar iat iba ibb ibc ibi ibm ibr ibt ica icb icc ici icm icr ict iia iib iic iii iim iir iit im- ima imb imc imi imm imt ir- ira irb irc iri irm irr irt ita itb itc iti itm itt m-r maa mab mac mai mam mar mat mba mbb mbc mbi mbm mbr mbt mc- mca mcb mcc mci mcm mcr mct mi- mia mib mic mii mim mir mit mma mmb mmc mmi mmm mmr mmt mra mrb mrc mri mrm mrr mrt mta mtb mtc mti mtm mtr mtt ra- raa rab rac rai ram rar rat rba rbb rbc rbi rbm rbr rbt rca rcb rcc rci rcm rcr rct ria rib ric rii rim rir rit rma rmb rmc rmi rmm rmr rmt rra rrb rrc rri rrm rrr rrt rta rtb rtc rti rtm rtr rtt taa tab tac tai tam tar tat tba tbb tbc tbi tbm tbr tbt tca tcb tcc tci tcm tcr tct tia tib tic tii tim tir tit tma tmb tmc tmi tmm tmr tmt tra trb trc tri trm trr trt tta ttb ttc tti ttm ttr ttt

a-ii aaaa aaab aaac aaai aaam aaar aaba aabb aabc aabi aabm aabt aaca aacb aacc aaci aacm aacr aact aaib aaic aaii aama aamb aamc aami aamr aara aarc aari aarm aart aata aatc aatt abaa abab abac abai abam abar abat abb- abba abbb abbi abbr abbt abca abcb abcc abci abcr abct abia abib abic abim abir abit abma abmb abmc abmt abra abrc abri abta ac-t acaa acab acac acai acar acat acba acca accc acci accm acct aci- acia acic acim acir acma acmc acmi acr- acra acrc acri acrm acrr acta actc acti actt aiai aiba aica aicc aicr aiia aiib aiic aiir aimc aimi aimm aira airi airt aita aiti aitr aitt amaa amac amai amam amar amat amb- amba ambi ambr amca amcc amia amib amic amii amir amit amm- amma ammi amra amrc amri amta amtc amti arab arac arai aram arar arat arba arbi arc- arca arci arcm arct aria arib arii arim arit arma armc armi armm armt arr- arra arrc arri arrr arrt arta artc arti artr at-t ataa atab atac atai atar atat atca atcc atcr atia atic atim atit atm- atma atra atrc atri atrm atta atti attr ba-i baaa baam baar baat baba babb babi babm babr bac- baca bacc baci bact baia baib baic bair bait bama bamb bamc bami bamm bar- bara barb barc bari barm barr bart bata batc bati batt bbbb bbci bbcm bbrc bcaa bcam bcar bcat bcbc bcca bccc bcci bccm bcia bcit bcma bcra bctc biar biat biba bibb bibi bica bicc bici bima bira birb biri birr birt bita bitc bitt bmaa bmci bmic bmir bmmi bmtc brab brac brai bram brat brca brcb bria bric brim brit brmc brrm brrr brtc btaa btcc btrc btrt bttb caaa caab caac caam caat caba cabi cac- caca cacc caci cacm cacr caia caib caic caim cair cait cama camb camc cami camm camt cara carb carc cari carm carr cart cat- cata catb catc cati catm catt cbac cbar cbat cbbc cbca cbcc cbcm cbcr cbct cbia cbir cbit cbrm cbrt cbta cbtc ccaa ccab ccac ccai ccam ccar ccat ccba ccbc ccca cccb cccc ccci cccm ccic ccii ccim ccir ccma ccmb ccmc ccmm ccra ccrc ccri ccrt cctb cctc cctt ciaa ciam ciar ciat ciba cibc cibi cica cicc cici cicr cict ciia ciii ciit cima cimb cimi cimm cimr cira cirb circ ciri cirm cirr cirt cita citb citi citt cmaa cmac cmba cmbc cmcc cmii cmir cmmb cmmc cmmi cmra cmri cmrr cmta cmtc crab crac crai cram crar crat crbc crca crcc crcr cria crib cric crim crit crmb crrt crtc crtm ctab ctba ctbi ctca ctia ctic ctma ctrc ctrm ctta iaaa iaac iaai iaat iaba iabm iaca iacc iacr iact iaia iaim iama iamb iami iamt iara iarc iart iata iatc iati ibac ibar ibat ibbm ibca ibia ibim ibma ibra ibrc ibri ibtb ibtc icaa icab icac icai icam icar icat icbc icbm icca iccb iccc icci iccr icct icma icmc icmi icmm icmt icra icrc icrm icrr icrt icta iiac iica iiii iiit iimc iira iirc iita iitm iitr iitt imac imai imam imar imat imba imbi imca imcb imci imir imit imma immi immt imra imrc imri imrr imta irac irai iram irar irbm irca ircc iri- iria iric irma irmc irra irrc irri irta irti itaa itac itai itam itar itat itcm itia itic itim itma itra itri itta ma-i maaa maac maai maam maar maat maba mabi mac- maca macb macc maci macr mact maia maib maii maim mair mait mama mamc mami mar- mara marc mari marm marr mart mata matc mati matr matt mbac mbam mbba mbca mbci mbia mbim mbta mcaa mcac mcat mcba mcbc mcbi mcca mccc mcci mcia mcic mcii