a-a a-b a-c a-z aaa aab aac aao aar aas aau aaz ab- aba abb abc abo abr abs abu abz ac- aca acb acc aco acr acs acu acz aoa aob aoc aoo aor aos aou ar- ara arb arc aro arr ars aru arz as- asa asb asc aso asr ass asu asz au- aua aub auc auo aur aus auz az- aza azb azo azs azu azz b-u baa bab bac bao bar bas bau baz bba bbb bbc bbo bbr bbs bbu bca bcb bcc bco bcr bcs bcu bcz boa bob boc boo bor bos bou boz bra brb bro brr brs bru brz bsa bsb bsc bso bsr bss bsu bua bub buc buo bur bus buu buz bza bzo bzr bzs bzu bzz c-- caa cab cac cao car cas cau caz cba cbb cbc cbo cbr cbs cbu cbz cca ccb ccc cco ccr ccs ccu ccz co- coa cob coc coo cor cos cou coz cra crb crc cro crr crs cru crz csa csb csc cso csr css csu csz cua cub cuc cuo cur cus cuu cuz cz- czc czo oaa oab oac oao oar oas oau ob- oba obb obc obo obr obs obu oc- oca ocb occ oco ocr ocs ocu ocz oo- ooa oob ooc ooo oor oos or- ora orb orc oro orr ors oru orz os- osa osb osc oso osr oss osu ou- oua ouc ouo our ous oza ozo ozs ozu ozz ra- raa rab rac rao rar ras rau raz rba rbb rbc rbo rbr rbs rbu rca rcb rcc rco rcr rcs rcu roa rob roc roo ror ros rou roz rra rrb rrc rrr rrs rru rsa rsb rsc rso rsr rss rsu rua rub ruc ruo rur rus ruu ruz rza rzb rzo saa sab sac sao sar sas sau saz sba sbb sbc sbo sbr sbs sbu sca scb scc sco scr scs scu soa sob soc soo sor sos sou soz sr- sra srb src sro srr srs ss- ssa ssb ssc sso ssr sss ssu ssz sua sub suc suo sur sus suu suz sza szr szu ua- uaa uab uac uao uar uas uau uaz uba ubb ubc ubo ubr ubs ubu uca ucb ucc uco ucr ucs ucu uoa uob uoc uoo uor uos ur- ura urb urc uro urr urs uru urz usa usb usc uso usr uss usu usz uua uuc uur uus uuu uza uzb uzo uzu zaa zab zac zao zar zas zaz zbb zbc zbr zbs zco zcs zo- zoa zob zoc zoo zor zos zou zro zrs zsa zsu zsz zub zuc zur zus zuz zzr zzs zzz

-ous aaaa aaab aaac aaar aaas aaba aabb aabc aaca aacb aacc aaco aacr aacs aacu aaoo aara aarc aaro aars aaru aasa aasc aass aasu aaus abaa abab abac abar abas abau abb- abba abbb abbo abbr abbs abca abcb abcc abcr abcs aboa abob aboo abor abos abou abra abrc abro abrs abs- absa abss absu abua abus abza abzu acaa acab acac acar acas acba acca accc acco accs accu acoa acor acos acou acr- acra acrc acro acrr acrs acsa acsc acss acu- acuo acur acus aoba aoca aocs aora aorb aors aoss aous arab arac arar aras arau arba arbs arc- arca arco arcs aroa arob aroo aror aros aroz arr- arra arrc arro arrr arrs arru ars- arsa arsc arso arsu arua arub arza arzo arzu asaa asab asac asao asar asas asau asba asbo asbu asc- asca ascb ascc asco ascr asob asoc asor asos asou asra asrc asro asrs asru assa assc asso assr asss assu asub asur asus auaa auca aur- aura auro ausa ausu aza- azab azar azas azaz azca azo- azoo azor azos azra azua azur azza azzo baaa baar baas baaz baba babb babo babr babs babu bac- baca bacc baco bacs bacz baos bar- bara barb barc baro barr bars baru barz basa basc baso bass basu bau- baur baza bazo bbas bbau bbbb bbbs bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccs bcor bcos bcoz bcra bcrs bcru bcsa bcsc bcss bcuc boab boac boar boas boaz boba bobb bobo bobs bobu boca boco bocs bocu boob booc boor boos booz bor- bora boro borr bors boru borz bosa bosc boso boss bosu boua bour bous boza bozo brab brac brao bras brau braz brca brcb broa brob broc broo bror bros brou broz brrr brrs brsb brsr bruc brus bruz brza bsaa bsac bsas bscs bsos bsra bssc buar buba bubb bubo bubs bubu buca bucc buco bucs bucu bucz bur- bura burb buro burr burs buru burz busa busc buss busu buus buuz buza buzz bzou bzzz c-bo caaa caab caac caas caba cabo cabs cabu cac- caca cacc caco cacr caor caos caoz cara carb carc caro carr cars casa casb casc caso casr cass casu cauc cauo caus caza cazo cbac cbar cbbc cbbs cbca cbcc cbcr cbcs cbcu cbsa cbsc cbus ccaa ccab ccac ccar ccas ccba ccbc ccca cccb cccc cccs cccu ccob ccoc ccra ccrc ccrs ccsa ccss ccuc ccus coas coba cobb cobo cobs cobu coca coco cocu coob coos cor- cora corb corc coro corr cors cosa cosc coso coss coua coub cour cous cozz crab crac crar cras crau crbc crbu crca crcc crcr crcz crob croc croo cror croz crsa crss crub crus cruz csaa csab csac csao csar csas cscb cscc csco cscr cscs csob csor csos csra csrc csrs cssa cssr csua csur csus cuau cub- cuba cubb cubs cuca cucc cura curb curo curr curs cusa cusb cuso cuss cusu cuzo czar oaau oara oars oasc oass obas obba obbo obor obos obra obro obsr obss obus ocab ocac ocas ocbc occa occc ocos ocra ocro ocrr ocrs ocsa ocur ooaa ooba oocr oooo ooos oora oosa oous orab orac orao orar oras orba orbb orbo orbs orbu orca orco