a-ak aaaa aaab aaad aaar aaas aaba aabb aabd aada aads aaka aara aard aars aasa aasd aass abaa abab abad abak abar abas abb- abba abbb abbr abbs abda abra abrs abs- absa absd abss adaa adab adad adak adar adas adba adda addd addr adds adra adrs adsa adsr adss akaa akar akas akka akr- akra aksa arab arad arak arar aras arba arbs arda ards arka arks arr- arra arrk arrr arrs ars- arsa arsd arsk asaa asab asad asak asar asas asba asda asds aska askr asks asra asrs assa assd assk assr asss baaa baad baak baar baas baba babb babr babs bada badb badd badr bads bak- baka bakr baks bar- bara barb bard bark barr bars basa bask bass bbad bbas bbbb bbbs bbdd bd-r bdsd brab brad brak bras brda brds brka brkb brrr brrs brsb brsr bsaa bsas bsbd bsra bsrd bssd daab daad daar daas daba dabb dabs dada dads daka daks dara darb dard dark darr dars dasa dasb dasd dask dass dbar dbas dbrs dbsa dbss dddd ddss dkba draa drab drad drak drar dras drba drda drra drrs drsa dsba dsda dsdr dsrr dssa kaaa kaab kaak kaar kaas kaba kabb kabd kabr kad- kada kadd kadr kads kaka kakk kaks kara karb kard kark karr kars kas- kasa kasb kask kasr kass kbaa kbab kbad kbak kbar kbas kbba kbbb kbbd kbbk kbbr kbbs kbdb kbdr kbds kbkb kbkk kbkr kbra kbrb kbrd kbrk kbsa kbsb kbsk kbsr kbss kdaa kdab kdad kdak kdar kdbb kdbr kdbs kddb kddd kddk kddr kdka kdkb kdkd kdkk kdkr kdrb kdrs kdsd kdsk kdsr kdss kkaa kkar kkba kkbb kkbd kkbr kkbs kkda kkdd kkkk kkrb kkrk kkrr kkrs kksa kksd kksr kkss krab krad krak krar kras krba krbb krbd krbk krbr krda krdd krdr krds krka krkd krkk krkr krks krrb krrk krrr krrs krsa krsd krsk krsr krss ksab ksak ksar ksas ksba ksbr ksbs ksdk ksdr ksds kska kskb kskd kskk kskr ksks ksra ksrb ksrr ksrs kssa kssr ksss raab raad raak raas raba rabb rabk rabs rada radd radr rads raka rakk rara rarb rark rars rasa rasd rask rass rbbb rbbr rbbs rbds rbsd rbss rdas rkss rrad rras rrrr rsaa rsdd rsds rssa saab saad saak saar saas saba sabb sabr sabs sada sadb sadd sadr sads saka sakb sakk saks sara sard sark sarr sars sasa sasd sask sass sbaa sbar sbas sbbs sbds sbrk sbsa sbsd sdak sdba sdds sdrs sdss skab skad skar skra sksd skss sras srsd ssaa ssab ssas ssbr ssdd ssra ssrs sssa sssb ssss