a-be a-do aaaa aaab aaac aaad aaae aaap aaar aaba aabb aabc aabd aabp aaca aacb aacc aacd aace aaco aacp aacr aacu aada aadc aade aadu aaea aaec aaep aaoe aaoo aapa aapc aapo aara aarc aard aare aaro aarp aaru aaup abaa abab abac abad abae abap abar abau abb- abba abbb abbe abbo abbr abca abcb abcc abcd abcp abcr abda abdo abdu abec abed abee aber aboa abob abod aboo abor abou abpa abpc abpd abpp abpr abra abrc abro abua abud abue acaa acab acac acad acae acap acar acba acca accc accd acce acco accp accu acda acdb acdc acde acdp ace- acea acec aced acer acoa acod acoe acop acor acou acpa acpd acpe acpr acpu acr- acra acrc acre acro acrr acu- acue acuo acup acur adaa adab adac adad adae adao adap adar adba adbc adcc adda addc addd adde addo addr addu adea adeb adee adeo ader adob adoc adod adoe adoo ador adp- adra adre adro adua adub adue adur aeac aeap aecb aede aeer aer- aera aerc aerd aero aoba aoca aoce aoeu aopo aora aorb apac apao apap apar apba apbr apca apcb apcc apcd apco apcr apda apdd apdu apea apec aped apep aper apeu apo- apoc apod apoe apoo apop apor apou appa appc appd appr appu apra aprc apre apro apua apuc apud apup arab arac arad arae arap arar arau arba arbe arc- arca arce arco arda ardc arde ardo ardu area arec ared aree areo arep areu aroa arob arod aroe aroo aror arpa arpe arpu arr- arra arrc arre arro arrr arru arua arub arud arue arup auaa aube auca auce aucp audc aude audo auer aupc aur- aura aurd aure auro baaa baad baar baba babb babe babo babr babu bac- baca bacc bace baco bada badb badd bade bado badr badu baed baer bapa bapc bape bapp bapu bar- bara barb barc bard bare baro barr baru bau- baud baur bbad bbau bbbb bbdd bbdo bbeb bbpr bbrc bcaa bcap bcar bcbc bcbp bcca bccc bcda bcde bcec bcer bcor bcpp bcra bcru bcuc bcup bd-r bdbc bddc bdpc bead beap bear beau beba bebb bebe bebo beca becu beda bede bedo bedu beeb beed beep beer beo- beod beor bepo bera berc berd bere bero berr beru beur boab boac boad boar boba bobb bobe bobo bobu boca boce boco bocu boda bodb bode bodo bodu boea boec boee boeo boep boer boob booc bood booe boop boor bopa bope bopp bor- bora bord bore boro borr boru boua boud boue boup bour bpcp bpda bpea bpoe bprc bprd brab brac brad brae brao brau brca brcb brce brda brdo brea breb brec bred bree breo brep brer broa brob broc brod broe broo bror brou brrr bruc brud brue brup buad buar buba bubb bube bubo bubu buca bucc buce buco bucu buda budb budd bude budo budu buea buer bueu bupa bupc bur- bura burb burd bure buro burp burr buru c-bo c-cd caaa caab caac caap caba cabe cabo cabu cac- caca cacc cace caco cacr cada cadc cadd cade cado cadr cadu caec caer caeu caod caor capa capb capc capd cape capo capp capu cara carb carc card care caro carp carr cauc cauo caup cbac cbar cbbc cbca cbcc cbce cbcp cbcr cbcu cbdb cbdc cbdo cbea cbec cbee cber cbpc cbpp cbrd cbre ccaa ccab ccac ccad ccap ccar ccba ccbc ccca cccb cccc cccp cccu ccdc ccdp ccdr cced ccee ccob ccoc ccod ccpa ccpe ccpp ccpr ccra ccrc ccre ccrp ccuc ccup cd-e cd-r cdaa cdac cdad cdba cdda cddb cddr cdec cder cdre ceac cead cear ceba cebp cebu cec- ceca cece ceco cecp ceda cedd cede cedo cedu ceeb ceec ceop ceor ceou cepa cepc cepe cepo cepp cepr cer- cera cerc cerd cere cero cerp coad coba cobb cobe cobo cobu coca coce coco cocp cocu coda codd code coed coep coob cood coop copa copd cope copo copp copr cor- cora corb corc cord core coro corp corr coua coub coud coue coup cour cpaa cpac cpad cpap cpbc cpca cpce cpcu cpea cpeb cpep cper cppa cppd cpre crab crac crap crar crau crbc crbu crca crcc crce crcr crda crdc cre- crea creb crec cred cree creo crep creu crob croc crod croe croo crop cror crpc crub crud crue crup cuau cub- cuba cubb cube cuca cucc cuce cuda cude cued cuer cupe cupo cupp cupr cura curb curd cure curo curr d-bo daab daad daae daap daar daau daba dabb dabo dabp dabu daca dace dada dade dado dadu daeb daer daeu daou dapa dape dapp dapu dara darb darc dard dare daro darp darr daru daub daud daue daur dbar dbcc dbcp dbpc dbpd dcbc dcca dccb dccc dccp dccu dcdb dcop dcpo dcra dcup dddd ddoc ddpo ddrc ddre ddub deac dead deae deap dear deau deba debe debu dec- deca decc decd dece deco deda dedd dede dedo dedu deeb deed deep deer deop deor depa depc depe depo depp depr der- dera derb derc dere dero derp derr deua deue deur doab doae doap doar doba dobb dobe dobu doca doce doco docu dod- doda dodd dode dodo doea doer doob dood doop door dopa dope dopo dopp dopr dora dorc dord dore doro dorp dorr doru doub douc doud doue doup dour dpaa dpac dpbc dpcp dper dppa dppc draa drab drac drad drap drar drau drba drbc drca drda drea dred dree drob drod drop drou drra drua drub drue drup druu duaa duab duad duar dub- duba dubb dubc dube dubu duca duce duco duda dudd dude dudo dudu duer duo- dupa dupe dupo dura dure duro duru duur eaba eaca eacc eada eadb eadd eadp eaec eaop eapc eapp eara earb eard eare earo earp ebac ebba ebbc ebbo ebbr ebcc ebed eber eboe eboo ebor ebpo ebro ebru ebur ecaa ecac ecad