-ic a-a a-b a-c a-i aaa aab aac aai aak aam aar ab- aba abb abc abi abk abm abr ac- aca acb acc aci ack acm acr ai- aia aib aic aii aik aim air aka akb akc aki akk akm akr ama amb amc ami amk amm amr ar- ara arb arc ari ark arm arr baa bab bac bai bak bam bar bba bbb bbc bbi bbk bbm bbr bca bcb bcc bci bck bcm bcr bi- bia bib bic bii bik bim bir bka bkb bkc bkk bkm bkr bma bmb bmc bmi bmk bmm bmr bra brb bri brk brm brr c-- caa cab cac cai cak cam car cba cbb cbc cbi cbk cbm cbr cca ccb ccc cci cck ccm ccr ci- cia cib cic cii cik cim cir cka ckb ckc cki ckm cma cmb cmc cmi cmk cmm cmr cra crb crc cri crk crm crr ia- iaa iab iac iai iam iar iba ibb ibc ibi ibk ibm ibr ica icb icc ici ick icm icr iia iib iic iii iim iir ika ikb ikc iki ikk ikr im- ima imb imc imi imm ir- ira irb irc iri irk irm irr ka- kaa kab kac kai kak kam kar kba kbb kbc kbi kbk kbm kbr kca kcb kcc kci kck kcm kcr kia kib kic kii kik kim kir kkb kkc kki kkk kkm kkr kma kmb kmc kmi kmk kmm kra krc kri krk krr m-r maa mab mac mai mak mam mar mba mbb mbc mbi mbk mbm mbr mc- mca mcb mcc mci mck mcm mcr mi- mia mib mic mii mik mim mir mka mkb mkc mkk mkm mkr mma mmb mmc mmi mmk mmm mmr mra mrb mrc mri mrk mrm mrr ra- raa rab rac rai rak ram rar rba rbb rbc rbi rbk rbm rbr rca rcb rcc rci rcm rcr ria rib ric rii rik rim rir rkb rkc rkk rkm rma rmb rmc rmi rmm rmr rra rrb rrc rri rrk rrm rrr

a-ak a-ii aaaa aaab aaac aaai aaam aaar aaba aabb aabc aabi aabm aaca aacb aacc aaci aack aacm aacr aaib aaic aaii aaka aama aamb aamc aami aamr aara aarc aari aarm abaa abab abac abai abak abam abar abb- abba abbb abbi abbr abca abcb abcc abci abcr abia abib abic abim abir abma abmb abmc abra abrc abri acaa acab acac acai acar acba acca accc acci accm aci- acia acic acim acir acma acmc acmi acr- acra acrc acri acrm acrr aiai aiba aica aicc aicr aiia aiib aiic aiir aika aiki aimc aimi aimm aira airi akaa akai akam akar akca akia akik akim akir akka akki akr- akra amaa amac amai amam amar amb- amba ambi ambr amca amcc amia amib amic amii amik amir amka amm- amma ammi amra amrc amri arab arac arai arak aram arar arba arbi arc- arca arci arcm aria arib arii arik arim arka arki arma armc armi armm arr- arra arrc arri arrk arrr ba-i baaa baak baam baar baba babb babi babm babr bac- baca bacc baci back baia baib baic baik bair bak- baka baki bakr bama bamb bamc bami bamm bar- bara barb barc bari bark barm barr bbbb bbci bbcm bbrc bcaa bcam bcar bcbc bcca bccc bcci bccm bcia bcma bcra biak biar biba bibb bibi bica bicc bici bick bima bira birb biri birk birr bmaa bmci bmic bmir bmmi brab brac brai brak bram brca brcb bria bric brik brim brka brkb brmc brrm brrr caaa caab caac caam caba cabi cac- caca cacc caci cack cacm cacr caia caib caic caik caim cair caka cama camb camc cami camk camm cara carb carc cari cark carm carr cbac cbar cbbc cbca cbcc cbcm cbcr cbia cbir cbka cbkm cbkr cbrm ccaa ccab ccac ccai ccam ccar ccba ccbc ccca cccb cccc ccci cccm ccic ccii ccim ccir cckm ccma ccmb ccmc ccmm ccra ccrc ccri ciaa ciak ciam ciar ciba cibc cibi cica cicc cici cicr ciia ciii cika cikr cima cimb cimi cimm cimr cira cirb circ ciri cirk cirm cirr ckac ckbc ckbi ckck ckcm ckrc ckrm cmaa cmac cmba cmbc cmcc cmii cmir cmmb cmmc cmmi cmra cmri cmrr crab crac crai cram crar crbc crca crcc crcr cria crib cric crik crim crkc crmb iaaa iaac iaai iaba iabm iaca iacc iacr iaia iaim iama iamb iami iara iarc ibac ibar ibbm ibca ibia ibim ibma ibra ibrc ibri icaa icab icac icai icam icar icbc icbm icca iccb iccc icci iccr icma icmc icmi icmm icra icrc icrm icrr iiac iica iiii iimc iira iirc ikar ikki ikma ikra ikri imac imai imam imar imba imbi imca imcb imci imck imir imma immi imra imrc imri imrr irac irai irak iram irar irbm irca ircc iri- iria iric irka irki irma irmc irra irrc irri k-ci kaaa kaab kaai kaak kaam kaar kaba kabb kabc kabi kabr kacb kacc kaci kaia kaib kaic kaii kaik kaim kair kaka kakc kaki kakk kakm kam- kama kamb kamc kami kamm kamr kara karb kari kark karm karr kbaa kbab kbac kbai kbak kbam kbar kbba kbbb kbbc kbbi kbbk kbbm kbbr kbca kbcb kbci kbck kbcr kbia kbib kbic kbik kbim kbkb kbkk kbkr kbmb kbmc kbmi kbmr kbra kbrb kbrc kbri kbrk kcaa kcab kcac kcai kcam kcar kcba kcbc kcbi kcbk kcbr kcca kccb kccc kcci kcck kccr kcic kcii kcim kcir kckc kckk kckm kckr kcmb kcmc kcmi kcmk kcmm kcmr kcrc kcri kcrr kiab kiac kiai kiam kiar kiba kibb kibc kibi kibr kica kicb kicc kick kicm kicr kiia kiic kiii kiik kika kikc kiki kikk kikr kima kimb kimi kimm kira kirb kirc kiri kirk kirr kkaa kkac kkai kkam kkar kkba kkbb kkbi kkbr kkcb kkci kkck kkcm kkcr kkia kkic kkik kkim kkkk kkma kkmc kkmi kkmk kkmr kkrb kkrc kkrk kkrr kmac kmai