a-do aaaa aaac aaad aaap aaar aaca aacc aacd aaco aacp aacr aacu aada aadc aadu aaoo aapa aapc aapo aara aarc aard aaro aarp aaru aaup acaa acac acad acap acar acca accc accd acco accp accu acda acdc acdp acoa acod acop acor acou acpa acpd acpr acpu acr- acra acrc acro acrr acu- acuo acup acur adaa adac adad adao adap adar adcc adda addc addd addo addr addu adoc adod adoo ador adp- adra adro adua adur aoca aopo aora apac apao apap apar apca apcc apcd apco apcr apda apdd apdu apo- apoc apod apoo apop apor apou appa appc appd appr appu apra aprc apro apua apuc apud apup arac arad arap arar arau arc- arca arco arda ardc ardo ardu aroa arod aroo aror arpa arpu arr- arra arrc arro arrr arru arua arud arup auaa auca aucp audc audo aupc aur- aura aurd auro c-cd caaa caac caap cac- caca cacc caco cacr cada cadc cadd cado cadr cadu caod caor capa capc capd capo capp capu cara carc card caro carp carr cauc cauo caup ccaa ccac ccad ccap ccar ccca cccc cccp cccu ccdc ccdp ccdr ccoc ccod ccpa ccpp ccpr ccra ccrc ccrp ccuc ccup cd-r cdaa cdac cdad cdda cddr coad coca coco cocp cocu coda codd cood coop copa copd copo copp copr cor- cora corc cord coro corp corr coua coud coup cour cpaa cpac cpad cpap cpca cpcu cppa cppd crac crap crar crau crca crcc crcr crda crdc croc crod croo crop cror crpc crud crup cuau cuca cucc cuda cupo cupp cupr cura curd curo curr daad daap daar daau daca dada dado dadu daou dapa dapp dapu dara darc dard daro darp darr daru daud daur dcca dccc dccp dccu dcop dcpo dcra dcup dddd ddoc ddpo ddrc doap doar doca doco docu dod- doda dodd dodo dood doop door dopa dopo dopp dopr dora dorc dord doro dorp dorr doru douc doud doup dour dpaa dpac dpcp dppa dppc draa drac drad drap drar drau drca drda drod drop drou drra drua drup druu duaa duad duar duca duco duda dudd dudo dudu duo- dupa dupo dura duro duru duur oaau oara ocac ocad ocap occa occc ocpa ocpd ocpp ocra ocro ocrr ocur odac odda oddd odoo odop odor odou odra odrp odur ooaa oocr ooda oooo oora oord opap opar opca opo- opor oppa oppo opra opua orac orad orao orar orca orco orda ordo ordu oro- oror orpc orra orro orup ouac ouad oucc oudc oupa our- oura ouro ouu- paap paar paca pacd paco pacu pada padd pado padu paoc papa papp papr par- para parc pard paro parp parr paru paua paud paup paur pcaa pcad pcap pcca pccc pcoa pcod pcpp pcra pcrc pcrd pdac pdca pdcp pdoc pdpa pdpr pdrc poad poar poca pocd poco pod- poda podd podo podu pood poop poor pop- popa popc popo popp pora porc poro porr poud poup pour ppac ppad ppap ppar ppcc ppcd ppoa ppod pppa pppd pppo pppp pprc ppru ppur prad prao prar prau prca prcc prcd prcp pro- proa proc prod proo prop prou prpd prrd prud pruu puao puar puca pudo pudu pupa pupu pur- pura puro purp purr puru puuc raad rac- raca racc raco racu rada radc radd rado radr radu raoc raop rapa rapc rapd rapp rara raro raua rauc raud raup rcac rccc rcdc rcpd rcpo rcrd rdac rdap rdoc rdpc road roap roar roca rocc roco roda rodd rodo rood roop roor ropa ropo rora rorc roro roru roua roud roup rpca rpdp rrad rrrr ruad ruca ruda rudd rudo rudp rupa rupp rura rurc rurd ruro rurp ruru ruud u-rp uaca uaoc uarc uaru uaua ucad ucar ucca uccp ucdc ucdd ucpa ucrc ucua udaa udad udar udau udca udoo udop udpd udra uocc uor- upac upar upca upda updo upor uppa uppc uppp uppu upra upup urac urad urao urap urau urca urda urdu uro- uroa uroo urpo urra urup urur uucp uuoc uuuu