-up a-a a-b a-c aaa aab aac aao aap aar aas aau ab- aba abb abc abo abp abr abs abu ac- aca acb acc aco acp acr acs acu aoa aob aoc aoo aop aor aos aou ap- apa apb apc apo app apr aps apu ar- ara arb arc aro arp arr ars aru as- asa asb asc aso asp asr ass asu au- aua aub auc auo aup aur aus b-p b-u baa bab bac bao bap bar bas bau bba bbb bbc bbo bbp bbr bbs bbu bca bcb bcc bco bcp bcr bcs bcu boa bob boc boo bop bor bos bou bpa bpb bpc bpo bpp bpr bps bpu bra brb bro brp brr brs bru bsa bsb bsc bso bsp bsr bss bsu bua bub buc buo bup bur bus buu c-- caa cab cac cao cap car cas cau cba cbb cbc cbo cbp cbr cbs cbu cca ccb ccc cco ccp ccr ccs ccu co- coa cob coc coo cop cor cos cou cpa cpb cpc cpo cpp cpr cps cpu cra crb crc cro crp crr crs cru csa csb csc cso csp csr css csu cua cub cuc cuo cup cur cus cuu oaa oab oac oao oap oar oas oau ob- oba obb obc obo obp obr obs obu oc- oca ocb occ oco ocp ocr ocs ocu oo- ooa oob ooc ooo oop oor oos op- opa opb opc opo opp opr ops or- ora orb orc oro orp orr ors oru os- osa osb osc oso osp osr oss osu ou- oua ouc ouo oup our ous p-p paa pab pac pao pap par pas pau pba pbb pbc pbo pbp pbr pbs pbu pca pcb pcc pco pcp pcr pcs pcu poa pob poc poo pop por pos pou ppa ppb ppc ppo ppp ppr pps ppu pra prb prc pro prp prr prs pru ps- psa psb psc pso psp psr pss psu pua pub puc pup pur pus puu ra- raa rab rac rao rap rar ras rau rba rbb rbc rbo rbp rbr rbs rbu rca rcb rcc rco rcp rcr rcs rcu roa rob roc roo rop ror ros rou rpa rpb rpc rpo rpp rpr rps rpu rra rrb rrc rrp rrr rrs rru rsa rsb rsc rso rsp rsr rss rsu rua rub ruc ruo rup rur rus ruu saa sab sac sao sap sar sas sau sba sbb sbc sbo sbp sbr sbs sbu sca scb scc sco scp scr scs scu soa sob soc soo sop sor sos sou spa spb spc spo spp spr sps spu sr- sra srb src sro srp srr srs ss- ssa ssb ssc sso ssp ssr sss ssu sua sub suc suo sup sur sus suu ua- uaa uab uac uao uap uar uas uau uba ubb ubc ubo ubp ubr ubs ubu uca ucb ucc uco ucp ucr ucs ucu uoa uob uoc uoo uop uor uos up- upa upb upc upo upp upr ups upu ur- ura urb urc uro urp urr urs uru usa usb usc uso usp usr uss usu uua uuc uur uus uuu

-ous aaaa aaab aaac aaap aaar aaas aaba aabb aabc aabp aaca aacb aacc aaco aacp aacr aacs aacu aaoo aapa aapc aapo aaps aara aarc aaro aarp aars aaru aasa aasc aass aasu aaup aaus abaa abab abac abap abar abas abau abb- abba abbb abbo abbr abbs abca abcb abcc abcp abcr abcs aboa abob aboo abor abos abou abpa abpc abpp abpr abps abra abrc abro abrs abs- absa absp abss absu abua abus acaa acab acac acap acar acas acba acca accc acco accp accs accu acoa acop acor acos acou acpa acpr acps acpu acr- acra acrc acro acrr acrs acsa acsc acss acu- acuo acup acur acus aoba aoca aocs aopo aora aorb aors aosp aoss aous apac apao apap apar apas apba apbr apbs apca apcb apcc apco apcr apcs apo- apoc apoo apop apor apos apou appa appc appr apps appu apra aprc apro aprs apsa apso apss apsu apua apuc apup apus arab arac arap arar aras arau arba arbs arc- arca arco arcs aroa arob aroo aror aros arpa arps arpu arr- arra arrc arro arrr arrs arru ars- arsa arsc arso arsu arua arub arup asaa asab asac asao asap asar asas asau asba asbo asbu asc- asca ascb ascc asco ascp ascr asob asoc asop asor asos asou aspa aspc aspo aspr asps asra asrc asro asrs asru assa assc asso assp assr asss assu asub asur asus auaa auca aucp aupc aups aur- aura auro ausa ausu baaa baar baas baba babb babo babr babs babu bac- baca bacc baco bacs baos bapa bapc bapp baps bapu bar- bara barb barc baro barr bars baru basa basc baso bass basu bau- baur bbas bbau bbbb bbbs bbpr bbrc bcaa bcap bcar bcas bcbc bcbp bcbs bcca bccc bccs bcor bcos bcpp bcps bcra bcrs bcru bcsa bcsc bcss bcuc bcup boab boac boar boas boba bobb bobo bobs bobu boca boco bocs bocu boob booc boop boor boos bopa bopp bops bor- bora boro borr bors boru bosa bosc boso boss bosu boua boup bour bous bpcp bprc bpsa bpsu brab brac brao bras brau brca brcb broa brob broc broo bror bros brou brrr brrs brsb brsr bruc brup brus bsaa bsac bsap bsas bscp bscs bsos bspp bspr bsra bssc bsup buar buba bubb bubo bubs bubu buca bucc buco bucs bucu bupa bupc bups bur- bura burb buro burp burr burs buru busa busc buss busu buus c-bo caaa caab caac caap caas caba cabo cabs cabu cac- caca cacc caco cacr caor caos capa capb capc capo capp caps capu cara carb carc caro carp carr cars casa casb casc caso casp casr cass casu cauc cauo caup caus cbac cbar cbbc cbbs cbca cbcc cbcp cbcr cbcs cbcu cbpc cbpp cbsa cbsc cbus ccaa