a-ha aaaa aaab aaac aaah aaam aaar aaba aabb aabc aabh aabm aaca aacb aacc aach aacm aacr aaha aama aamb aamc aamr aara aarc aarm abaa abab abac abam abar abb- abba abbb abbr abca abcb abcc abch abcr abha abhm abhr abma abmb abmc abra abrc acaa acab acac acar acba acca accc acch accm acha achh achr acma acmc acmh acr- acra acrc acrm acrr ahab ahac ahah aham ahar ahha ahmc ahra ahrc ahrr amaa amac amah amam amar amb- amba ambr amca amcc amm- amma amra amrc arab arac arah aram arar arba arbh arc- arca arch arcm arh- arma armc armh armm arr- arra arrc arrh arrr baaa baah baam baar baba babb babm babr bac- baca bacc bach baha bahr bama bamb bamc bamm bar- bara barb barc barh barm barr bbbb bbch bbcm bbrc bcaa bcam bcar bcbc bcca bccc bccm bcma bcra bhar bhca bhcc bhra bmaa brab brac brah bram brca brcb brmc brrm brrr caaa caab caac caah caam caba cac- caca cacc cach cacm cacr caha cama camb camc camh camm cara carb carc carm carr cbac cbar cbbc cbca cbcc cbcm cbcr cbha cbrh cbrm ccaa ccab ccac ccam ccar ccba ccbc ccca cccb cccc cccm ccha cchr ccma ccmb ccmc ccmm ccra ccrc chaa chab chac chah cham char chca chch chcm chha chmb chmc chra chrb chrc chrr cmaa cmac cmah cmba cmbc cmcc cmha cmhc cmmb cmmc cmra cmrr crab crac cram crar crbc crca crcc crcr crmb haab haam haar haba haha hama hamc hamm hamr hara harc harh harm harr hbar hcbc hcca hccb hccc hcch hcmc hcmm hhaa hhhh hmhb hmmm hrac hrrc maaa maac maam maar maba mac- maca macb macc mach macr maha mahr mama mamc mar- mara marc marm marr mbac mbam mbba mbca mcaa mcac mcba mcbc mcca mccc mcmc mcrc mhac mhmm mhmr mhra mmaa mmab mmac mmar mmcc mmcm mmhm mmmc mmmh mmmm mmrc mr-c mrac mrbb mrbm mrca mrcb mrcc mrmc mrrc raab raam raba rabb rac- raca racc rach raha rahm rahr rama ramb ramm rara rarb rbbb rbbr rcac rcbc rccb rccc rchb rchm rhcm rrah rrmc rrrr