a-do a-ha aaaa aaac aaad aaah aaar aaca aacc aacd aach aaco aacr aada aadc aaha aaoo aara aarc aard aaro acaa acac acad acar acca accc accd acch acco acda acdc acha achh acho achr acoa acod acoh acor acr- acra acrc acro acrr adaa adac adad adah adao adar adcc adda addc addd addo addr adha adhd adho adoc adod adoo ador adra adro ahac ahad ahah ahar ahha ahoa ahod ahor ahra ahrc ahrr aoah aoca aodh aora arac arad arah arar arc- arca arch arco arda ardc ardo arh- aroa arod aroo aror arr- arra arrc arrh arro arrr c-cd caaa caac caah cac- caca cacc cach caco cacr cada cadc cadd cado cadr caha caod caor cara carc card caro carr ccaa ccac ccad ccar ccca cccc ccdc ccdh ccdr ccha cchr ccoc ccod ccra ccrc cd-r cdaa cdac cdad cdda cddr chaa chac chad chah chao char chca chch chha choc chod choh choo chor chra chrc chrd chro chrr coad coca coch coco coda codd coha coho cood cooh cor- cora corc cord coro corr crac crar crca crcc crcr crda crdc croc crod croh croo cror daad daar daca dada dado daha dara darc dard daro darr dcca dccc dcra dddd ddoc ddrc dhaa dhad dhao dhar dhod dhor doar doca doch doco dod- doda dodd dodo doha dohc dohr dood door dora dorc dord doro dorr draa drac drad drar drca drda drod droh drra haad haar haco hada hadh haha haho haor hara harc hard harh haro harr hcca hccc hcch hcdr hcrd hdca hdda hdoc hdod hdra hhaa hhhh hoac hoad hoar hoca hoch hocr hoda hodh hodr hoha hoho hood hoor hora horc hord horo horr hrac hrad hrdc hrod hrrc oara ocac ocad occa occc ocha ocra ocro ocrr odac odah odda oddd odoh odoo odor odra ohad ohcc ohho ohoh ohra ooaa oocr ooda ooha ooho oooh oooo oora oord orac orad orah orao orar orca orch orco orda ordo oro- oror orra orro raad rac- raca racc rach raco rada radc radd radh rado radr raha rahr raoc raoh rara raro rcac rccc rcdc rcrd rdac rdoc rhoa rhoc rhod rhoh road roar roca rocc roch roco roda rodd rodo roha rohr rood roor rora rorc roro rrad rrah rrrr