a-be aaaa aaab aaac aaad aaae aaam aaar aaba aabb aabc aabd aabm aaca aacb aacc aacd aace aacm aacr aada aadc aade aaea aaec aaem aama aamb aamc aamd aame aamr aara aarc aard aare aarm abaa abab abac abad abae abam abar abb- abba abbb abbe abbr abca abcb abcc abcd abcr abda abec abed abee aber abma abmb abmc abra abrc acaa acab acac acad acae acar acba acca accc accd acce accm acda acdb acdc acde acdm ace- acea acec aced acem acer acma acmc acme acr- acra acrc acre acrm acrr adaa adab adac adad adae adam adar adba adbc adcc adda addc addd adde addr adea adeb adee adem ader adma admb adme admr adra adre aeac aecb aede aeer aer- aera aerc aerd amaa amac amad amae amam amar amb- amba ambe ambr amca amcc amda amec amed amee amer amm- amma amme amra amrc arab arac arad arae aram arar arba arbe arc- arca arce arcm arda ardc arde ardm area arec ared aree arem arma armc armd arme armm arr- arra arrc arre arrr baaa baad baam baar baba babb babe babm babr bac- baca bacc bace bada badb badd bade badr baed baer bama bamb bamc bame bamm bar- bara barb barc bard bare barm barr bbad bbbb bbcm bbdd bbeb bbrc bcaa bcam bcar bcbc bcca bccc bccm bcda bcde bcec bcer bcma bcra bd-r bdbc bddc bdrm bead beam bear beba bebb bebe beca beda bede beeb beed beem beer bema beme bera berc berd bere berm berr bmaa bmce bmdb brab brac brad brae bram brca brcb brce brda brdm brea breb brec bred bree brem brer brmc brrm brrr c-cd caaa caab caac caam caba cabe cac- caca cacc cace cacm cacr cada cadc cadd cade cadm cadr caec caem caer cama camb camc came camm cara carb carc card care carm carr cbac cbar cbbc cbca cbcc cbce cbcm cbcr cbdb cbdc cbea cbec cbee cber cbme cbrd cbre cbrm ccaa ccab ccac ccad ccam ccar ccba ccbc ccca cccb cccc cccm ccdc ccdm ccdr cced ccee ccma ccmb ccmc ccmd ccmm ccra ccrc ccre cd-e cd-r cdaa cdac cdad cdba cdda cddb cddr cdec cder cdma cdre ceac cead cear ceba cec- ceca cece cecm ceda cedd cede ceeb ceec ceem cema cemb ceme cemm cemr cer- cera cerc cerd cere cmaa cmac cmba cmbc cmcc cmda cmdb cmdr cmea cmec cmmb cmmc cmra cmrr crab crac cram crar crbc crca crcc crce crcr crda crdc cre- crea creb crec cred cree crem crmb daab daad daae daam daar daba dabb daca dace dada dade daeb daem daer dama damb dame damm dara darb darc dard dare darr dbar dbcc dcbc dcca dccb dccc dcdb dcma dcra dddd ddrc ddre deac dead deae dear deba debe dec- deca decc decd dece deda dedd dede deeb deed deem deer dem- dema demb demd deme der- dera derb derc dere derm derr dmaa dmab dmac dmae dmba dmcc dmcm dmdc dmea dmrb dmrc draa drab drac drad dram drar drba drbc drca drda drea dred dree drem drra eaba eaca eacc eada eadb eadd eaec eama eame eara earb eard eare ebac ebam ebba ebbc ebbr ebcc ebed eber ecaa ecac ecad ecam ecar ecbc ecbe ecca eccb eccc ecce eccm ecdc eced ecem ecma ecra ecrc ecrm ecrr edac edad edam edar edca edda eddc edde eddm ede- edea edem eder edma edme edra edrm eeca eede eeea eeee eera eerc emac emad emae emam emar emba embd embe embr emcc emer emma emme emra emre erad eram erba erbb erbe erca ercc erce erda erde ereb erec ered erem erer erma ermc erme erra errc erre maaa maac maad maam maar maba mabe mac- maca macb macc macd mace macr mada madb madc madd made maee maem maer mama mamc mame mar- mara marc mard mare marm marr mbac mbam mbba mbca mbda mbdb mbed mcaa mcac mcad mcba mcbc mcca mccc mccd mcdc mcdd mcde mced mcmc mcrc mcrd mdac mdca mdcc mddm mdea mdma mdmc mdme mdra mdrc mead mear mebe mec- meca mecc mecd mece mecr meda medb medd mede meed meem meer mema memc meme memr mer- mera merb merc merd mere merm mmaa mmab mmac mmar mmcc mmcd mmcm mmda mmdb mmdc mmea mmmc mmmd mmmm mmrc mr-c mrac mrad mrbb mrbm mrca mrcb mrcc mrce mrda mrdd mreb mred mree mrmc mrmd mrrc raab raad raam raba rabb rabe rac- raca racc race rada radc radd rade radm radr raec raed raer rama ramb rame ramm rara rarb rare rbbb rbbr rcac rcbc rccb rccc rcdc rcde rcrd rdac rdbm rdcm rder rdma rea- reac read reae ream rear reba rebb rebe reca recc recd rece recm recr reda redc redd rede redr reeb reed reem rema reme rera rerd rere rrad rred rrmc rrrr