a-do a-fu aaaa aaab aaac aaad aaaf aaal aaap aaar aaba aabb aabc aabd aabl aabp aaca aacb aacc aacd aacf aacl aaco aacp aacr aacu aada aadc aadu aafa aafb aafc aafd aaff aafl aala aalc aald aall aalo aalu aaoo aapa aapc aapl aapo aara aarc aard aaro aarp aaru aaup abaa abab abac abad abaf abal abap abar abau abb- abba abbb abbo abbr abca abcb abcc abcd abcf abcl abcp abcr abda abdo abdu abff abla ablo aboa abob abod abof abol aboo abor abou abpa abpc abpd abpp abpr abra abrc abro abua abud abuf abul acaa acab acac acad acap acar acba acbl acca accc accd accf acco accp accu acda acdb acdc acdf acdp acfc acfd acfl acla aclc aclr aclu acoa acod acol acop acor acou acpa acpd acpr acpu acr- acra acrc acro acrr acu- acuf acul acuo acup acur adaa adab adac adad adal adao adap adar adba adbc adcc adda addc addd addl addo addr addu adfa adfc adfl adob adoc adod adoo ador adp- adra adro adua adub adur afaa afad afao afap afar afca afcb afcc afcu afdb afdc afdl affa affc affo afla aflc aflp afoa afol afoo afor afpa afpc afr- afra afrc afro afru afua afud al-p alaa alac alad alal alao alap alar alau alb- alba albc albo albu alca alcc alco ald- alda aldl aldo alfa all- alla alll allo allr allu aloa aloc alod alof alol aloo alop alor alou alpa alpl alpo alpu alro alua aluf alur aoba aoca aola aopo aora aorb aouf aoul apac apal apao apap apar apba apbr apca apcb apcc apcd apco apcr apda apdd apdu apfa apfc apfl apfo apl- apla aplp aplu apo- apoc apod apof apoo apop apor apou appa appc appd appl appr appu apra aprc apro apua apuc apud apup arab arac arad araf aral arap arar arau arba arc- arca arco arda ardc ardf ardl ardo ardu arfa arfb arfc arff arfu arla arlo aroa arob arod aroo aror arpa arpl arpu arr- arra arrc arro arrr arru arua arub arud arul arup auaa auca aucp audc audo aufc aul- aula auld aulf aull aulo aulu auol aupc aur- aura aurd auro baaa baad baaf baal baar baba babb babo babr babu bac- baca bacc baco bada badb badd bado badr badu bafc baff bafo bala balc bald balf ball balo balu baol bapa bapc bapp bapu bar- bara barb barc bard barf baro barr baru bau- baud bauf baul baur bbad bbau bbbb bbdd bbdo bbfc bblb bbpr bbrc bcaa bcap bcar bcbc bcbp bcca bccc bccl bcda bcfc bcof bcor bcpl bcpp bcra bcru bcuc bcup bd-r bdbc bddc bdpc bduf bfca bffl bfpo bfpp blaa blab blac blad blau blcu bldc bldr blfc blob bloc blod bloo blop blou blrc blub blud bluf blup blur boab boac boad boal boar boba bobb bobo bobu boca boco bocu boda bodb bodo bodu bofa bofd boff bofu bola bold boll bolo bolu boob booc bood boof bool boop boor bopa bopp bor- bora bord borf boro borr boru boua boud bouf boul boup bour bpcp bpda bpfc bpfl bprc bprd brab brac brad braf brao brau brca brcb brda brdo brfc brfu brlp broa brob broc brod brol broo bror brou brrr bruc brud brup buad bual buar buba bubb bubo bubu buca bucc buco bucu buda budb budd budl budo budu bufc buff bufo bufr bula bulb buld bull bulu buol bupa bupc bur- bura burb burd burl buro burp burr buru c-bo c-cd caaa caab caac caaf caal caap caba cabf cabo cabu cac- caca cacc caco cacr cada cadc cadd cado cadr cadu cafa cafb cafc caff cafl cafu cala calc cald calf call calo calp calu caod caol caor capa capb capc capd capo capp capu cara carb carc card carf carl caro carp carr cauc cauf caul cauo caup cbac cbal cbar cbbc cbca cbcc cbcl cbcp cbcr cbcu cbdb cbdc cbdo cbfb cbfc cblb cblc cbol cbpc cbpp cbrd cbrl ccaa ccab ccac ccad ccaf ccap ccar ccba ccbc ccca cccb cccc cccf cccl cccp cccu ccdc ccdf ccdp ccdr ccfa ccfc ccfd ccff ccfl ccla cclc ccob ccoc ccod ccpa ccpl ccpp ccpr ccra ccrc ccrf ccrl ccrp ccuc ccup cd-r cdaa cdac cdad cdba cdbf cdda cddb cddl cddr cdfa cfaa cfab cfac cfao cfar cfbc cfbr cfca cfcb cfcf cfcl cfco cfda cfdp cffb cffr cfoa cfor cfpa cfpl cfpo cfpr cfra cfrb cfrp clab clad claf clap clar clau clcd cldc cldr clob clod clof cloo clop clor clou clpb clpp clra clrd clro club clud coad coal coba cobb cobo cobu coca coco cocp cocu coda codd codl cofc coff col- cola colb cold coll colo colp colu coob cood coof cool coop copa copd copo copp copr cor- cora corb corc cord corf corl coro corp corr coua coub coud coul coup cour cpaa cpac cpad cpaf cpap cpbc cpca cpcu cpdl cpff cplc cppa cppd crab crac craf crap crar crau crbc crbu crca crcc crcr crda crdc crfc crfl crlf crob croc crod crol croo crop cror crpc crub crud crup cuau cub- cuba cubb cuca cucc cuda cufa cufc cuff cufo cula culb culc culd cull culo culp cupl cupo cupp cupr cura curb curd curf curl curo curr d-bo daab daad daal daap daar daau daba dabb dabo dabp dabu daca dada dado dadu dafa dafc daff dafo dala dalf dall dalo dalu daou dapa dapp dapu dara darb darc dard darf darl daro darp darr daru daub daud daur dbar dbcc dbcp dbfc dbfo dblp dbpc dbpd dbpf dcbc dcca dccb dccc dccl dccp dccu dcdb dcfc dcop dcpl dcpo dcra dcup dddd ddlc ddoc ddpo ddrc ddub dfaf dfcc dfco dfcu dffa dfrf dlab dlbd dlco doab doal doap doar doba dobb dobl dobu doca doco docu dod- doda dodd dodo doff dola dold dolf doll dolo dolp dolu doob