a-a a-c aaa aac aaf aaj aak aao aar aas aau ac- aca acc acf acj ack aco acr acs acu af- afa afc aff afj afk afo afr afs afu aja ajc ajf ajj ajk ajo ajr ajs aju aka akc akj akk ako akr aks aku aoa aoc aof aoj aok aoo aor aos aou ar- ara arc arf arj ark aro arr ars aru as- asa asc asf asj ask aso asr ass asu au- aua auc auf auj auk auo aur aus c-- c-j caa cac caf caj cak cao car cas cau cca ccc ccf ccj cck cco ccr ccs ccu cfa cfc cff cfk cfo cfr cfs cfu cja cjc cjf cjk cjr cjs cka ckc cko cks co- coa coc cof coj cok coo cor cos cou cra crc crf crj crk cro crr crs cru csa csc csf csj csk cso csr css csu cua cuc cuf cuk cuo cur cus cuu faa fac faf faj fak fao far fas fau fca fcc fcf fcj fck fco fcr fcs fcu ffa ffc fff ffk ffo ffr ffs ffu fja fjc fjs fka fkc fkf fkj fkk foa foc fof fok foo for fos fou fra frc frf frj frk fro frr frs fru fsa fsc fsf fsj fsk fso fsr fss fsu fua fuf fuk fuo fur fus fuu jaa jac jaf jaj jak jao jar jas jau jca jcc jcf jck jco jcr jcs jcu jfa jfc jff jfj jfk jfo jfr jfs jja jjc jjf jjj jjk jjr jjs jju jka jkk jko jkr jks jku joa joc jof joj jok joo jor jos jou jra jrc jrf jrk jro jrr jrs jsa jsc jsf jsj jsk jso jsr jss jsu juf juk juo jur jus ka- kaa kac kaf kaj kak kao kar kas kau kca kcc kck kcr kcs kcu kfa kfc kff kfo kfs kfu kjc kjr kjs kju kkc kkk kkr kks kku koa koc kof kok koo kor kos kou kra krc krf krk kro krr krs kru ksa ksc ksf ksk kso ksr kss ksu kuc kuj kuk kur kus kuu oaa oac oaf oaj oak oao oar oas oau oc- oca occ ocf ocj ock oco ocr ocs ocu of- ofa ofc off ofo ofr ofs ofu oja ojc ojo ojs oju oka okc okj okk oko okr oks oku oo- ooa ooc oof ook ooo oor oos or- ora orc orf ork oro orr ors oru os- osa osc osf osj osk oso osr oss osu ou- oua ouc ouf ouk ouo our ous ra- raa rac raf raj rak rao rar ras rau rca rcc rcf rcj rco rcr rcs rcu rfa rfc rff rfj rfk rfo rfr rfs rfu rja rjc rjf rjk rjr rkc rkf rkk rko rks rku roa roc rof roj rok roo ror ros rou rra rrc rrf rrk rrr rrs rru rsa rsc rsf rsj rsk rso rsr rss rsu rua ruc ruf ruk ruo rur rus ruu saa sac saf saj sak sao sar sas sau sca scc scf scj sck sco scr scs scu sfa sfc sff sfj sfk sfo sfr sfs sfu sja sjc sjf sjj sjk sjr sjs sju sk- ska skc skf skj skk sko skr sks sku soa soc sof soj sok soo sor sos sou sr- sra src srf srj srk sro srr srs ss- ssa ssc ssf ssj ssk sso ssr sss ssu sua suc suf suk suo sur sus suu ua- uaa uac uaf uaj uak uao uar uas uau uca ucc ucf ucj uck uco ucr ucs ucu ufa ufc uff ufj ufo ufr ufs ufu ujc ujo ujs uka ukc ukf ukk ukr uku uoa uoc uoj uok uoo uor uos ur- ura urc urf urk uro urr urs uru usa usc usf usj usk uso usr uss usu uua uuc uur uus uuu