a-ha aaaa aaab aaac aaah aaal aaar aaba aabb aabc aabh aabl aaca aacb aacc aach aacl aaco aacr aaha aahl aala aalc aall aalo aaoo aara aarc aaro abaa abab abac abal abar abb- abba abbb abbo abbr abca abcb abcc abch abcl abcr abha abho abhr abla ablo aboa abob aboh abol aboo abor abra abrc abro acaa acab acac acar acba acbl acca accc acch acco acha achh achl acho achr acla aclc aclr acoa acoh acol acor acr- acra acrc acro acrr ahab ahac ahah ahal ahar ahha ahla ahoa ahor ahra ahrc ahrr alaa alac alal alao alar alb- alba albc albo alca alcc alco alha all- alla allh alll allo allr aloa aloc aloh alol aloo alor alro aoah aoba aoca aola aora aorb arab arac arah aral arar arba arbh arc- arca arch arco arh- arla arlo aroa arob aroo aror arr- arra arrc arrh arro arrr baaa baah baal baar baba babb babo babr bac- baca bacc bach baco baha bahl baho bahr bala balc ball balo baoh baol bar- bara barb barc barh baro barr bbbb bbch bblb bbrc bcaa bcar bcbc bcca bccc bccl bcor bcra bhao bhar bhca bhcc bhor bhra blaa blab blac blah blob bloc bloo blrc boab boac boal boar boba bobb bobo boca boch boco boha bohl boho bohr bola boll bolo boob booc booh bool boor bor- bora borh boro borr brab brac brah brao brca brcb broa brob broc broh brol broo bror brrr c-bo caaa caab caac caah caal caba cabo cac- caca cacc cach caco cacr caha cahl cala calc call calo caol caor cara carb carc carl caro carr cbac cbal cbar cbbc cbca cbcc cbcl cbcr cbha cbhl cblb cblc cbol cbrh cbrl ccaa ccab ccac ccar ccba ccbc ccca cccb cccc cccl ccha cchl cchr ccla cclc ccob ccoc ccra ccrc ccrl chaa chab chac chah chal chao char chca chch chha chlc chlr choc choh chol choo chor chra chrb chrc chro chrr clab clar clob cloo clor clra clro coal coba cobb cobh cobo coca coch coco coha coho col- cola colb coll colo coob cooh cool cor- cora corb corc corl coro corr crab crac crar crbc crca crcc crcr crob croc croh crol croo cror haab haal haar haba habo haco haha haho hal- hala halb hall halo haor hara harc harh harl haro harr hbar hboc hcbc hcca hccb hccc hcch hhaa hhcl hhhh hhla hlah hoac hoar hoba hobo hoca hoch hocr hoha hohl hoho hol- hola holb holc holh holl holo hool hoor hora horc horl horo horr hrac hrbl hrob hrrc laaa laac laal laar laba labo labr laca lacc lach lacl laco laha laho lahr lala lall lalo lara larb larc larr lbar lbcc lblr lcac lcbc lcca lccc lchc lchr lcor lcra lcrl lhhh lhor llao llcc lllc llll lloa lloc lloo loac loar lob- loba lobb lobh lobo loca locc loch loco loha loho lohr lola loll lolo loob looc lool loor lora loro lrac lral lrba lroc lrrc lrrr oall oara obal obba obbo obla obol obor obra obrh obro ocab ocac ocal ocbc occa occc ocha oclc ocra ocrl ocro ocrr ohal ohba ohcc ohho ohob ohoh ohra olac olah olar olba olbo olca olcc olla ollo olor ooaa ooba oocr ooha ooho oola oolo oooh oooo oora orab orac orah oral orao orar orba orbb orbo orca orch orco orla orlo oro- oror orra orro raab raba rabb rabl rabo rac- raca racc rach raco raha rahl rahr rala ralb rall ralo raob raoc raoh raol rara rarb raro rbbb rbbr rbcl rboh rcac rcbc rcbo rccb rccc rchb rhoa rhob rhoc rhoh rlab roab roar rob- roba robb robo roca rocc roch roco roha rohl rohr rola roll rolo roob rool roor rora rorc roro rrah rrrr