a-do aaaa aaab aaac aaad aaar aaas aaba aabb aabc aabd aabt aaca aacb aacc aacd aaco aacr aacs aact aada aadc aads aadt aaoo aara aarc aard aaro aars aart aasa aasc aasd aass aast aata aatc aatt abaa abab abac abad abar abas abat abb- abba abbb abbo abbr abbs abbt abca abcb abcc abcd abcr abcs abct abda abdo aboa abob abod aboo abor abos abot abra abrc abro abrs abs- absa absd abss abta abts ac-t acaa acab acac acad acar acas acat acba acca accc accd acco accs acct acda acdb acdc acds acdt acoa acod acor acos acot acr- acra acrc acro acrr acrs acsa acsc acsd acss acst acta actc acto acts actt adaa adab adac adad adao adar adas adat adba adbc adcc adcs adda addc addd addo addr adds adob adoc adod adoo ador ados adot adra adro adrs adsa adso adsr adss adst adta adts aoba aoca aocs aora aorb aors aort aosd aoss aotc aotd arab arac arad arar aras arat arba arbs arc- arca arco arcs arct arda ardc ardo ards aroa arob arod aroo aror aros arr- arra arrc arro arrr arrs arrt ars- arsa arsc arsd arso arst arta artc arto artr arts asaa asab asac asad asao asar asas asat asba asbo asc- asca ascb ascc asco ascr asct asda asdo asds asob asoc asod asor asos asot asra asrc asro asrs assa assc assd asso assr asss asst asta astb astc asto astr asts at-t ataa atab atac atad atar atas atat atbs atca atcc atco atcr atcs atdt atob atoc atod ator atos atot atra atrc atro atsb atsc atst atta atto attr atts baaa baad baar baas baat baba babb babo babr babs bac- baca bacc baco bacs bact bada badb badd bado badr bads baos bar- bara barb barc bard baro barr bars bart basa basc baso bass bast bata batc bato bats batt bbad bbas bbbb bbbs bbdd bbdo bbrc bcaa bcar bcas bcat bcbc bcbs bcca bccc bccs bcda bcds bcor bcos bcra bcrs bcsa bcsc bcss bctc bcts bd-r bdbc bddc bdos bdsd boab boac boad boar boas boat boba bobb bobo bobs boca boco bocs boda bodb bodo bods boob booc bood boor boos boot bor- bora bord boro borr bors bort bosa bosc boso boss bost bota botb botd boto bots bott brab brac brad brao bras brat brca brcb brda brdo brds brdt broa brob broc brod broo bror bros brot brrr brrs brsb brsr brst brtc bsaa bsac bsas bsat bsbd bscs bsod bsos bsra bsrd bssc bssd bsts btaa btcc btcs btdt btob btor btrc btrt btss bttb c-bo c-cd caaa caab caac caas caat caba cabo cabs cac- caca cacc caco cacr cada cadc cadd cado cadr cads caod caor caos cara carb carc card caro carr cars cart casa casb casc casd caso casr cass cast cat- cata catb catc catd cato cats catt cbac cbar cbat cbbc cbbs cbca cbcc cbcr cbcs cbct cbdb cbdc cbdo cbds cbot cbrd cbrt cbsa cbsc cbta cbtc ccaa ccab ccac ccad ccar ccas ccat ccba ccbc ccca cccb cccc cccs ccdc ccdr ccds ccob ccoc ccod ccra ccrc ccrs ccrt ccsa ccsd ccss ccst cctb cctc cctt cd-r cdaa cdac cdad cdba cdcs cdda cddb cddr cdos cdot cdrs cdss coad coas coat coba cobb cobo cobs coca coco coct coda codd cods coob cood coos coot cor- cora corb corc cord coro corr cors cort cosa cosc coso coss cost cota cotb cotc coto cots cott crab crac crar cras crat crbc crca crcc crcr crda crdc crob croc crod croo cror crot crrt crsa crss crst crtc crts csaa csab csac csao csar csas csat cscb cscc cscd csco cscr cscs csda csdb csdr csob csor csos csot csra csrc csrd csrs cssa cssd cssr csta cstc cstd csto cstr csts ctab ctba ctbs ctca ctor ctos ctot ctrc ctrs ctsa ctsc ctss ctta ctts d-bo daab daad daar daas daba dabb dabo dabs dabt daca dacs dact dada dado dads daos dara darb darc dard daro darr dars dart dasa dasb dasc dasd dass dast data dato datr dats datt dbar dbas dbcc dbcs dbos dbrs dbsa dbss dbtt dcas dcbc dcca dccb dccc dccs dcct dcdb dcds dcos dcra dcsc dcss dctc dcts dddd ddoc ddot ddrc ddss ddts doab doar doas doat doba dobb dobs doca doco docs doct dod- doda dodd dodo dods doob dood door doos doot dora dorc dord doro dorr dors dort dosa doso doss dost dota dotd doto dots dott draa drab drac drad drar dras drat drba drbc drca drda drob drod drot drra drrs drsa dsac dsba dsbc dscc dscr dscs dsda dsdr dsoa dsos dsrc dsrr dssa dssc dsst dstc dsto dsts dtaa dtac dtcc dtor dtot dtss oara oars oasc oass oast oats obad obas obba obbo obdt obor obos obot obra obro obsd obsr obss obst obtd obts ocab ocac ocad ocas ocat ocbc occa occc occt ocds ocos ocra ocro ocrr ocrs ocsa oct- octa octo octs odac odas odbo odda oddd odds odoo odor odos odot odra odso odts ooaa ooba oocr ooda oooo ooos oora oord oort oosa oost ootb oots orab orac orad orao orar oras orat orba orbb orbo orbs orca orco orcs orda ordo ords oro- oror oros orot orra orro orrs orsa orso orta ortc orto orts osar osas osat osba osca oscc osco osoo osor osos osrd osro ossa ossb ossd osso osta ostc ostr osts otac otar otas otbd otbs otcd oto- otoo otor otos otra otro otrs otsa otso otta otto otts raab raad raas raat raba rabb rabo rabs rac- raca racc raco racs ract rada radc radd rado radr rads radt raob raoc raos rara rarb raro rars rasa rasc rasd raso rass rast rata rato rats ratt rbbb rbbr rbbs rbds rbsd rbss rbst rcac rcas rcbc rcbo rccb rccc rccs rcdc rcds rcos rcrd