a-do aaaa aaab aaac aaad aaap aaar aaba aabb aabc aabd aabp aabt aaca aacb aacc aacd aaco aacp aacr aact aacu aada aadc aadt aadu aaoo aapa aapc aapo aapt aara aarc aard aaro aarp aart aaru aata aatc aatt aaup abaa abab abac abad abap abar abat abau abb- abba abbb abbo abbr abbt abca abcb abcc abcd abcp abcr abct abda abdo abdu aboa abob abod aboo abor abot abou abpa abpc abpd abpp abpr abra abrc abro abta abtu abua abud abut ac-t acaa acab acac acad acap acar acat acba acca accc accd acco accp acct accu acda acdb acdc acdp acdt acoa acod acop acor acot acou acpa acpd acpr acpt acpu acr- acra acrc acro acrr acta actc acto actt actu acu- acuo acup acur acut adaa adab adac adad adao adap adar adat adba adbc adcc adda addc addd addo addr addu adob adoc adod adoo ador adot adp- adra adro adta adua adub adur aoba aoca aopo aora aorb aort aotc aotd aout apac apao apap apar apat apba apbr apca apcb apcc apcd apco apcr apda apdd apdu apo- apoc apod apoo apop apor apot apou appa appc appd appr appt appu apra aprc apro aprt apta aptc aptt apua apuc apud apup arab arac arad arap arar arat arau arba arc- arca arco arct arda ardc ardo ardu aroa arob arod aroo aror arpa arpu arr- arra arrc arro arrr arrt arru arta artc arto artr arua arub arud arup arut at-t ataa atab atac atad atap atar atat atca atcc atco atcr atdt atob atoc atod atop ator atot atpr atra atrc atro atrp atru atta atto attp attr attu atua atub atuc atur auaa auca aucp auct audc audo aupc aur- aura aurd auro aut- auto baaa baad baar baat baba babb babo babr babu bac- baca bacc baco bact bada badb badd bado badr badu bapa bapc bapp bapt bapu bar- bara barb barc bard baro barr bart baru bata batc bato batt batu bau- baud baur bbad bbau bbbb bbdd bbdo bbpr bbrc bcaa bcap bcar bcat bcbc bcbp bcca bccc bcda bcor bcpp bcra bcru bctc bcuc bcup bd-r bdbc bddc bdpc boab boac boad boar boat boba bobb bobo bobu boca boco bocu boda bodb bodo bodu boob booc bood boop boor boot bopa bopp bor- bora bord boro borr bort boru bota botb botd boto bott boua boud boup bour bout bpcp bpda bpot bprc bprd brab brac brad brao brat brau brca brcb brda brdo brdt broa brob broc brod broo bror brot brou brrr brtc bruc brud brup brut btaa btbp btcc btdt btob btor btrc btrt bttb buad buar buat buba bubb bubo bubu buca bucc buco bucu buda budb budd budo budu bupa bupc bur- bura burb burd buro burp burr burt buru but- buta buto butt c-bo c-cd caaa caab caac caap caat caba cabo cabu cac- caca cacc caco cacr cada cadc cadd cado cadr cadu caod caor capa capb capc capd capo capp capt capu cara carb carc card caro carp carr cart cat- cata catb catc catd cato catt catu cauc cauo caup caut cbac cbar cbat cbbc cbca cbcc cbcp cbcr cbct cbcu cbdb cbdc cbdo cbot cbpc cbpp cbrd cbrt cbta cbtc ccaa ccab ccac ccad ccap ccar ccat ccba ccbc ccca cccb cccc cccp cccu ccdc ccdp ccdr ccob ccoc ccod ccpa ccpp ccpr ccra ccrc ccrp ccrt cctb cctc cctt ccuc ccup ccut cd-r cdaa cdac cdad cdba cdda cddb cddr cdot coad coat coba cobb cobo cobu coca coco cocp coct cocu coda codd coob cood coop coot copa copd copo copp copr copt cor- cora corb corc cord coro corp corr cort cota cotb cotc coto cott cotu coua coub coud coup cour cout cpaa cpac cpad cpap cpbc cpca cpcu cppa cppd cprt cptp cptr crab crac crap crar crat crau crbc crbu crca crcc crcr crda crdc crob croc crod croo crop cror crot crpc crrt crtc crtp crub crud crup crut ctab ctba ctca ctcp ctor ctot ctpo ctpp ctrc ctrp ctta cuau cub- cuba cubb cuca cucc cuda cupo cupp cupr cura curb curd curo curr curt cut- cuta cutc cuto cutt d-bo daab daad daap daar daau daba dabb dabo dabp dabt dabu daca dact dada dado dadu daou dapa dapp dapu dara darb darc dard daro darp darr dart daru data dato datp datr datt datu daub daud daur daut dbar dbcc dbcp dbpc dbpd dbtt dcbc dcca dccb dccc dccp dcct dccu dcdb dcop dcpo dcra dctc dcup dddd ddoc ddot ddpo ddrc ddub doab doap doar doat doba dobb dobu doca doco doct docu dod- doda dodd dodo doob dood doop door doot dopa dopo dopp dopr dopt dora dorc dord doro dorp dorr dort doru dota dotd doto dott doub douc doud doup dour dout dpaa dpac dpbc dpcp dpdt dppa dppc draa drab drac drad drap drar drat drau drba drbc drca drda drob drod drop drot drou drra drua drub drup drut druu dtaa dtac dtap dtcc dtdp dtor dtot dttp duaa duab duad duar duat dub- duba dubb dubc dubu duca duco duct duda dudd dudo dudu duo- dupa dupo dura duro durt duru duta dutp duur duut oaau oara obad obba obbo obdt obor obot obra obro obtd ocab ocac ocad ocap ocat ocbc occa occc occt ocpa ocpd ocpp ocra ocro ocrr oct- octa octo ocur odac odbo odda oddd odoo odop odor odot odou odra odrp odtu odur ooaa ooba oocr ooda oooo oora oord oort ootb ootp opap opar opca opo- opor oppa oppo opra opto opua orab orac orad orao orar orat orba orbb orbo orbu orca orco orda ordo ordu oro- oror orot orpc orra orro orta ortc orto orub orup otac otap otar otbd otcd oto- otoo otor otpp otra otro otta otto ottu otur ouac ouad ouat oucc oudc oupa our- oura ouro ourt out- outa outb outo