a-a a-b a-c aaa aab aac aah aao aar aas aau ab- aba abb abc abh abo abr abs abu ac- aca acb acc ach aco acr acs acu aha ahb ahc ahh aho ahr ahs ahu aoa aob aoc aoh aoo aor aos aou ar- ara arb arc arh aro arr ars aru as- asa asb asc ash aso asr ass asu au- aua aub auc auh auo aur aus b-u baa bab bac bah bao bar bas bau bba bbb bbc bbh bbo bbr bbs bbu bca bcb bcc bch bco bcr bcs bcu bha bhb bhc bhh bho bhr bhs bhu boa bob boc boh boo bor bos bou bra brb brh bro brr brs bru bsa bsb bsc bsh bso bsr bss bsu bua bub buc buh buo bur bus buu c-- caa cab cac cah cao car cas cau cba cbb cbc cbh cbo cbr cbs cbu cca ccb ccc cch cco ccr ccs ccu ch- cha chb chc chh cho chr chs chu co- coa cob coc coh coo cor cos cou cra crb crc crh cro crr crs cru csa csb csc csh cso csr css csu cua cub cuc cuh cuo cur cus cuu haa hab hac hah hao har has hau hba hbb hbc hbh hbo hbr hbs hbu hca hcb hcc hch hco hcr hcs hha hhb hhc hhh hho hhr hhs hhu hoa hob hoc hoh hoo hor hos hou hr- hra hrb hrc hrh hro hrr hrs hru hsa hsb hsc hsh hsr hss hsu hua hub huc huh huo hur hus huu oaa oab oac oah oao oar oas oau ob- oba obb obc obh obo obr obs obu oc- oca ocb occ och oco ocr ocs ocu oha ohc ohh oho ohr ohs ohu oo- ooa oob ooc ooh ooo oor oos or- ora orb orc orh oro orr ors oru os- osa osb osc osh oso osr oss osu ou- oua ouc ouh ouo our ous ra- raa rab rac rah rao rar ras rau rba rbb rbc rbh rbo rbr rbs rbu rca rcb rcc rch rco rcr rcs rcu rh- rha rhb rhc rhh rho rhr rhs rhu roa rob roc roh roo ror ros rou rra rrb rrc rrh rrr rrs rru rsa rsb rsc rsh rso rsr rss rsu rua rub ruc ruh ruo rur rus ruu saa sab sac sah sao sar sas sau sba sbb sbc sbh sbo sbr sbs sbu sca scb scc sch sco scr scs scu sh- sha shb shc shh sho shr shs shu soa sob soc soh soo sor sos sou sr- sra srb src srh sro srr srs ss- ssa ssb ssc ssh sso ssr sss ssu sua sub suc suh suo sur sus suu ua- uaa uab uac uah uao uar uas uau uba ubb ubc ubh ubo ubr ubs ubu uca ucb ucc uch uco ucr ucs ucu uha uhb uhc uhh uho uhr uhs uhu uoa uob uoc uoo uor uos ur- ura urb urc uro urr urs uru usa usb usc ush uso usr uss usu uua uuc uur uus uuu

-hou -ous a-ha aaaa aaab aaac aaah aaar aaas aaba aabb aabc aabh aaca aacb aacc aach aaco aacr aacs aacu aaha aahs 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 abch abcr abcs abha abho abhr abhs aboa abob aboh aboo abor abos abou abra abrc abro abrs abs- absa abss absu abua abus acaa acab acac acar acas acba acca accc acch acco accs accu acha achh acho achr achs achu acoa acoh acor acos acou acr- acra acrc acro acrr acrs acsa acsc acss acu- acuo acur acus ahab ahac ahah ahar ahas ahau ahha ahhs ahoa ahor ahra ahrc ahrr ahrs ahsa ahso ahss ahua ahus aoah aoba aoca aocs aora aorb aors aoss aous arab arac arah arar aras arau arba arbh arbs arc- arca arch arco arcs arh- arhs aroa arob aroo aror aros arr- arra arrc arrh arro arrr arrs arru ars- arsa arsc arso arsu arua arub asaa asab asac asah asao asar asas asau asba asbo asbu asc- asca ascb ascc asch asco ascr asha ashs ashu asob asoc asor asos asou asra asrc asro asrs asru assa assc assh asso assr asss assu asub asur asus auaa auca auch aur- aura auro ausa aush ausu baaa baah baar baas baba babb babo babr babs babu bac- baca bacc bach baco bacs baha baho bahr bahs bahu baoh baos bar- bara barb barc barh baro barr bars baru basa basc bash baso bass basu bau- baur bbas bbau bbbb bbbs bbch bbhs bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccs bchs bcor bcos bcra bcrs bcru bcsa bcsc bcss bcuc bhao bhar bhca bhcc bhhs bhor bhra bhur bhuu boab boac boar boas boba bobb bobo bobs bobu boca boch boco bocs bocu boha boho bohr bohs bohu boob booc booh boor boos bor- bora borh boro borr bors boru bosa bosc bosh boso boss bosu boua bouh bour bous brab brac brah brao bras brau brca brcb brhs broa brob broc broh broo bror bros brou brrr brrs brsb brsr bruc bruh brus bsaa bsac bsas bscs bshs bsos bsra bssc buar buba bubb bubo bubs bubu buca bucc buch buco bucs bucu buha buho buhr buhs bur- bura burb burh buro burr burs buru busa busc bush buss busu buus c-bo caaa caab caac caah caas caba cabo cabs cabu cac- caca cacc cach caco cacr caha cahs caor caos cara carb carc caro carr cars casa casb casc cash caso casr cass casu cauc cauo caus cbac cbar cbbc cbbs cbca cbcc cbcr cbcs cbcu cbha cbhs cbrh cbsa cbsc cbus ccaa ccab ccac ccar ccas ccba ccbc ccca cccb cccc cccs cccu ccha cchr cchs ccob ccoc ccra ccrc ccrs ccsa ccss ccuc ccus chaa chab