-al -ol a-a a-b a-c aaa aab aac aal aao aar aas aau ab- aba abb abc abl abo abr abs abu ac- aca acb acc acl aco acr acs acu al- ala alb alc all alo alr als alu aoa aob aoc aol aoo aor aos aou ar- ara arb arc arl aro arr ars aru as- asa asb asc asl aso asr ass asu au- aua aub auc aul auo aur aus b-u baa bab bac bal bao bar bas bau bba bbb bbc bbl bbo bbr bbs bbu bca bcb bcc bcl bco bcr bcs bcu bla blb blc bll blo blr bls blu boa bob boc bol boo bor bos bou bra brb brl bro brr brs bru bsa bsb bsc bsl bso bsr bss bsu bua bub buc bul buo bur bus buu c-- caa cab cac cal cao car cas cau cba cbb cbc cbl cbo cbr cbs cbu cca ccb ccc ccl cco ccr ccs ccu cl- cla clb clc cll clo clr cls clu co- coa cob coc col coo cor cos cou cra crb crc crl cro crr crs cru csa csb csc csl cso csr css csu cua cub cuc cul cuo cur cus cuu la- laa lab lac lal lao lar las lau lba lbb lbc lbl lbo lbr lbs lbu lca lcb lcc lcl lco lcr lcs lcu lla llb llc lll llo llr lls llu loa lob loc lol loo lor los lou lra lrb lrc lro lrr lrs lru lsa lsb lsc lsl lso lsr lss lsu lua lub luc lul luo lur lus luu oaa oab oac oal oao oar oas oau ob- oba obb obc obl obo obr obs obu oc- oca ocb occ ocl oco ocr ocs ocu ola olb olc oll olo ols olu oo- ooa oob ooc ool ooo oor oos or- ora orb orc orl oro orr ors oru os- osa osb osc osl oso osr oss osu ou- oua ouc oul ouo our ous ra- raa rab rac ral rao rar ras rau rba rbb rbc rbl rbo rbr rbs rbu rca rcb rcc rcl rco rcr rcs rcu rla rlc rll rlo rlr rls rlu roa rob roc rol roo ror ros rou rra rrb rrc rrl rrr rrs rru rsa rsb rsc rsl rso rsr rss rsu rua rub ruc ruo rur rus ruu saa sab sac sal sao sar sas sau sba sbb sbc sbl sbo sbr sbs sbu sca scb scc scl sco scr scs scu sla slb slc sll slo slr sls slu soa sob soc sol soo sor sos sou sr- sra srb src srl sro srr srs ss- ssa ssb ssc ssl sso ssr sss ssu sua sub suc sul suo sur sus suu ua- uaa uab uac ual uao uar uas uau uba ubb ubc ubl ubo ubr ubs ubu uca ucb ucc ucl uco ucr ucs ucu ula ulb ulc ull ulo ulr uls ulu uoa uob uoc uol uoo uor uos ur- ura urb urc url uro urr urs uru usa usb usc usl uso usr uss usu uua uuc uur uus uuu

-ous aaaa aaab aaac aaal aaar aaas aaba aabb aabc aabl aaca aacb aacc aacl aaco aacr aacs aacu aala aalc aall aalo aals aalu aaoo aara aarc aaro aars aaru aasa aasc aass aasu aaus abaa abab abac abal abar abas abau abb- abba abbb abbo abbr abbs abca abcb abcc abcl abcr abcs abla ablo abls aboa abob abol aboo abor abos abou abra abrc abro abrs abs- absa absl abss absu abua abul abus acaa acab acac acar acas acba acbl acca accc acco accs accu acla aclc aclr acls aclu acoa acol acor acos acou acr- acra acrc acro acrr acrs acsa acsc acsl acss acu- acul acuo acur acus alaa alac alal alao alar alas alau alb- alba albc albo albs albu alca alcc alco alcs all- alla alll allo allr alls allu aloa aloc alol aloo alor alos alou alro alsa alsc also alua alur alus aoba aoca aocs aola aora aorb aors aoss aoul aous arab arac aral arar aras arau arba arbs arc- arca arco arcs arla arlo aroa arob aroo aror aros arr- arra arrc arro arrr arrs arru ars- arsa arsc arso arsu arua arub arul asaa asab asac asal asao asar asas asau asba asbo asbu asc- asca ascb ascc ascl asco ascr asla aslo aslr asob asoc asor asos asou asra asrc asro asrs asru assa assc assl asso assr asss assu asub asur asus auaa auca aul- aula aull aulo auls aulu auol aur- aura auro ausa ausu baaa baal baar baas baba babb babo babr babs babu bac- baca bacc baco bacs bala balc ball balo bals balu baol baos bar- bara barb barc baro barr bars baru basa basc baso bass basu bau- baul baur bbas bbau bbbb bbbs bblb bbls bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccl bccs bcor bcos bcra bcrs bcru bcsa bcsc bcsl bcss bcuc blaa blab blac blas blau blcu blls blob bloc bloo blou blrc blss blub blur blus boab boac boal boar boas boba bobb bobo bobs bobu boca boco bocs bocu bola boll bolo bols bolu boob booc bool boor boos bor- bora boro borr bors boru bosa bosc boso boss bosu boua boul bour bous brab brac brao bras brau brca brcb brls broa brob broc brol broo bror bros brou brrr brrs brsb brsr bruc brus bsaa bsac bsas bscs bslc bsos bsra bssc bual buar buba bubb bubo bubs bubu buca bucc buco bucs bucu bula bulb bull buls bulu buol bur- bura burb burl buro burr burs buru busa busc buss busu buus c-bo caaa caab caac caal caas caba cabo cabs cabu cac- caca cacc caco cacr cala calc call calo cals calu caol caor caos cara carb carc carl caro carr cars casa casb casc casl caso casr cass casu cauc caul cauo caus cbac