a-ak aaaa aaab aaac aaam aaap aaba aabb aabc aabm aabp aaca aacb aacc aack aacm aacp aaka aama aamb aamc aamp aapa aapc aapm abaa abab abac abak abam abap abb- abba abbb abca abcb abcc abcp abma abmb abmc abpa abpc abpm abpp acaa acab acac acap acba acca accc accm accp acma acmc acmp acpa acpm akaa akam akap akca akka amaa amac amam amap amb- amba amca amcc amka amm- amma ampa ampc ampk ampm apac apak apam apap apba apca apcb apcc apcm apma appa appc baaa baak baam baba babb babm bac- baca bacc back bak- baka bama bamb bamc bamm bamp bapa bapc bapp bbbb bbcm bcaa bcam bcap bcbc bcbp bcca bccc bccm bcma bcmp bcpp bmaa bpcp bpmc caaa caab caac caam caap caba cac- caca cacc cack cacm caka cama camb camc camk camm camp capa capb capc capm capp cbac cbbc cbca cbcc cbcm cbcp cbka cbkm cbpc cbpp ccaa ccab ccac ccam ccap ccba ccbc ccca cccb cccc cccm cccp cckm ccma ccmb ccmc ccmm ccmp ccpa ccpm ccpp ckac ckbc ckck ckcm ckmp ckpc cmaa cmac cmap cmba cmbc cmcc cmmb cmmc cmpa cmpc cmpk cmpp cpaa cpac cpam cpap cpbc cpca cpcm cpma cpmp cppa cppm kaaa kaab kaak kaam kaap kaba kabb kabc kacb kacc kacp kaka kakc kakk kakm kam- kama kamb kamc kamm kamp kap- kapa kapc kapp kbaa kbab kbac kbak kbam kbap kbba kbbb kbbc kbbk kbbm kbca kbcb kbck kbkb kbkk kbmb kbmc kbmp kbpa kbpc kbpk kcaa kcab kcac kcam kcap kcba kcbc kcbk kcca kccb kccc kcck kckc kckk kckm kcmb kcmc kcmk kcmm kcmp kcpa kcpc kcpm kkaa kkac kkam kkap kkba kkbb kkcb kkck kkcm kkkk kkma kkmc kkmk kkmp kkpc kkpk kmac kmak kmam kmap kmbc kmca kmcb kmcc kmcm kmkk kmmk kmmm kmpa kmpb kmpc kpac kpak kpam kpba kpbb kpbm kpcc kpkk kpmb kpmp kppc kppk kppp maaa maac maak maam maap maba mac- maca macb macc mack macp maka mama mamc mamp mapa mapp mbac mbam mbba mbca mcaa mcac mcap mcba mcbc mcca mccc mckk mcmc mcpa mcpb mcpc mcpp mkak mmaa mmab mmac mmap mmcc mmcm mmmc mmmm mmpa mmpc mpaa mpac mpca mpcc mpmc mppc mppp paak paap paba paca pack paka pam- pama pamb pamm pamp papa papb papp pbac pbcc pbpa pbpk pcaa pcap pcba pcbc pcbm pcca pccc pcmb pcpb pcpm pcpp pmaa pmac pmcc pmma pmmp pmpm ppac ppap ppcc ppcm pppa pppp