a-be a-do aaaa aaab aaac aaad aaae aaap aaar aaba aabb aabc aabd aabp aabt aaca aacb aacc aacd aace aaco aacp aacr aact aada aadc aade aadt aaea aaec aaep aaoe aaoo aapa aapc aapo aapt aara aarc aard aare aaro aarp aart aata aatc aatt abaa abab abac abad abae abap abar abat abb- abba abbb abbe abbo abbr abbt abca abcb abcc abcd abcp abcr abct abda abdo abec abed abee aber abet aboa abob abod aboo abor abot abpa abpc abpd abpp abpr abra abrc abro abta ac-t acaa acab acac acad acae acap acar acat acba acca accc accd acce acco accp acct acda acdb acdc acde acdp acdt ace- acea acec aced acer acet acoa acod acoe acop acor acot acpa acpd acpe acpr acpt acr- acra acrc acre acro acrr acta actc acte acto actt adaa adab adac adad adae adao adap adar adat adba adbc adcc adda addc addd adde addo addr adea adeb adee adeo ader adet adob adoc adod adoe adoo ador adot adp- adra adre adro adta aeac aeap aecb aect aede aedt aeer aer- aera aerc aerd aero aeta aetc aeto aetr aett aoba aoca aoce aopo aora aorb aort aotc aotd apac apao apap apar apat apba apbr apca apcb apcc apcd apco apcr apda apdd apea apec aped apep aper apet apo- apoc apod apoe apoo apop apor apot appa appc appd appr appt apra aprc apre apro aprt apta aptc apte aptt arab arac arad arae arap arar arat arba arbe arc- arca arce arco arct arda ardc arde ardo area arec ared aree areo arep aret aroa arob arod aroe aroo aror arpa arpe arr- arra arrc arre arro arrr arrt arta artc arte arto artr at-t ataa atab atac atad atae atap atar atat atca atcc atco atcr atdt atea atec ated atee ateo atep ater atob atoc atod atoe atop ator atot atpr atra atrc atre atro atrp atta atte atto attp attr baaa baad baar baat baba babb babe babo babr bac- baca bacc bace baco bact bada badb badd bade bado badr baed baer bapa bapc bape bapp bapt bar- bara barb barc bard bare baro barr bart bata batc bate bato batt bbad bbbb bbdd bbdo bbeb bbet bbpr bbrc bcaa bcap bcar bcat bcbc bcbp bcca bccc bcda bcde bcec bcer bcet bcor bcpp bcra bctc bd-r bdbc bddc bdpc bead beap bear beat beba bebb bebe bebo beca beda bede bedo beeb beed beep beer beet beo- beod beor beot bepo bera berc berd bere bero berr bert beta betc bete beto bett boab boac boad boar boat boba bobb bobe bobo boca boce boco boda bodb bode bodo boea boec boee boeo boep boer boet boob booc bood booe boop boor boot bopa bope bopp bor- bora bord bore boro borr bort bota botb botd bote boto bott bpcp bpda bpea bpoe bpot bprc bprd brab brac brad brae brao brat brca brcb brce brda brdo brdt brea breb brec bred bree breo brep brer bret broa brob broc brod broe broo bror brot brrr brtc btaa btbp btcc btdt btec btob btor btrc btrt bttb c-bo c-cd caaa caab caac caap caat caba cabe cabo cac- caca cacc cace caco cacr cada cadc cadd cade cado cadr caec caer caod caor capa capb capc capd cape capo capp capt cara carb carc card care caro carp carr cart cat- cata catb catc catd cate cato catt cbac cbar cbat cbbc cbca cbcc cbce cbcp cbcr cbct cbdb cbdc cbdo cbea cbec cbee cber cbet cbot cbpc cbpp cbrd cbre cbrt cbta cbtc ccaa ccab ccac ccad ccap ccar ccat ccba ccbc ccca cccb cccc cccp ccdc ccdp ccdr cced ccee ccob ccoc ccod ccpa ccpe ccpp ccpr ccra ccrc ccre ccrp ccrt cctb cctc cctt cd-e cd-r cdaa cdac cdad cdba cdda cddb cddr cdec cder cdot cdre ceac cead cear ceat ceba cebp cec- ceca cece ceco cecp cect ceda cedd cede cedo cedt ceeb ceec ceop ceor cepa cepc cepe cepo cepp cepr cept cer- cera cerc cerd cere cero cerp cert cet- ceta cete ceto cetp coad coat coba cobb cobe cobo coca coce coco cocp coct coda codd code coed coep coob cood coop coot copa copd cope copo copp copr copt cor- cora corb corc cord core coro corp corr cort cota cotb cotc cote coto cott cpaa cpac cpad cpap cpbc cpca cpce cpea cpeb cpep cper cppa cppd cpre cprt cptp cptr crab crac crap crar crat crbc crca crcc crce crcr crda crdc cre- crea creb crec cred cree creo crep cret crob croc crod croe croo crop cror crot crpc crrt crtc crtp ctab ctae ctba ctca ctcp ctec ctep ctor ctot ctpo ctpp ctrc ctrp ctta d-bo daab daad daae daap daar daba dabb dabo dabp dabt daca dace dact dada dade dado daeb daer dapa dape dapp dara darb darc dard dare daro darp darr dart data date dato datp datr datt dbar dbcc dbcp dbpc dbpd dbtt dcbc dcca dccb dccc dccp dcct dcdb dcop dcpo dcra dctc dddd ddoc ddot ddpo ddrc ddre deac dead deae deap dear deba debe debt dec- deca decc decd dece deco dect deda dedd dede dedo deeb deed deep deer deet deop deor depa depc depe depo depp depr dept der- dera derb derc dere dero derp derr deta dete deto detr doab doae doap doar doat doba dobb dobe doca doce doco doct dod- doda dodd dode dodo doea doer doob dood doop door doot dopa dope dopo dopp dopr dopt dora dorc dord dore doro dorp dorr dort dota dotd dote doto dott dpaa dpac dpbc dpcp dpdt dper dppa dppc draa drab drac drad drap drar drat drba drbc drca drda drea dred dree dret drob drod drop drot drra dtaa dtac dtap dtcc dtdp dted dtor dtot dttp eaba eaca eacc eada eadb eadd eadp eaec eaop eapc eapp eara earb eard