-er a-a a-b a-c aaa aab aac aae aaj aak aam aao aar aas aau ab- aba abb abc abe abj abk abm abo abr abs abu ac- aca acb acc ace acj ack acm aco acr acs acu aea aeb aec aee aej aek aem aeo aer aes aeu aja ajb ajc aje ajj ajk ajm ajo ajr ajs aju aka akb akc ake akj akk akm ako akr aks aku ama amb amc ame amk amm amo amr ams amu aoa aob aoc aoe aoj aok aom aoo aor aos aou ar- ara arb arc are arj ark arm aro arr ars aru as- asa asb asc ase asj ask asm aso asr ass asu au- aua aub auc aue auj auk aum auo aur aus b-u baa bab bac bae baj bak bam bao bar bas bau bba bbb bbc bbe bbk bbm bbo bbr bbs bbu bca bcb bcc bce bcj bck bcm bco bcr bcs bcu be- bea beb bec bee bek bem beo ber bes beu bja bjc bjj bjk bjm bjr bjs bju bka bkb bkc bke bkk bkm bko bkr bks bma bmb bmc bme bmj bmk bmm bmo bmr bms bmu boa bob boc boe boj bok bom boo bor bos bou bra brb bre brj brk brm bro brr brs bru bsa bsb bsc bse bsj bsk bsm bso bsr bss bsu bua bub buc bue buj buk bum buo bur bus buu c-- c-j caa cab cac cae caj cak cam cao car cas cau cba cbb cbc cbe cbj cbk cbm cbo cbr cbs cbu cca ccb ccc cce ccj cck ccm cco ccr ccs ccu ce- cea ceb cec cee cej cek cem ceo cer ces ceu cja cjb cjc cjk cjr cjs cka ckb ckc ckm cko cks cma cmb cmc cme cmj cmk cmm cmo cmr cms cmu co- coa cob coc coe coj cok com coo cor cos cou cra crb crc cre crj crk crm cro crr crs cru csa csb csc cse csj csk csm cso csr css csu cua cub cuc cue cuk cum cuo cur cus cuu eaa eab eac eae eaj eak eam eao ear eas eau eba ebb ebc ebe ebj ebk ebm ebo ebr ebs ebu ec- eca ecb ecc ece ecj eck ecm eco ecr ecs ecu eea eeb eec eee eek eem eeo eer ees eja ejc ejo eju eka ekb ekc eke eko ekr eks eku em- ema emb emc eme emk emm emo emr ems emu eo- eoa eob eoc eoe eok eom eoo eor eos eou era erb erc ere erk erm ero err ers eru es- esa esb esc ese esk esm eso esr ess esu eu- eua eub euc eue euj eur eus jaa jab jac jae jaj jak jam jao jar jas jau jba jbc jbj jbk jbm jbo jbr jbs jbu jca jcb jcc jce jck jcm jco jcr jcs jcu jea jeb jec jee jej jek jem jeo jer jes jeu jja jjb jjc jjj jjk jjr jjs jju jka jkb jkk jkm jko jkr jks jku jma jmb jmc jme jmj jmm jmo jmr jms jmu joa job joc joe joj jok jom joo jor jos jou jra jrb jrc jrk jrm jro jrr jrs jsa jsb jsc jse jsj jsk jsm jso jsr jss jsu jub jue juk jum juo jur jus ka- kaa kab kac kae kaj kak kam kao kar kas kau kba kbb kbc kbe kbk kbm kbo kbr kbs kbu kca kcb kcc kce kck kcm kcr kcs kcu ke- kea keb kec kee kek kem keo ker kes kjb kjc kje kjr kjs kju kkb kkc kke kkk kkm kkr kks kku kma kmb kmc kme kmj kmk kmm kmo kms kmu koa kob koc koe kok kom koo kor kos kou kra krc krk kro krr krs kru ksa ksb ksc kse ksk ksm kso ksr kss ksu kub kuc kue kuj kuk kum kur kus kuu m-o m-r maa mab mac mae maj mak mam mao mar mas mau mba mbb mbc mbe mbj mbk mbm mbo mbr mbs mbu mc- mca mcb mcc mce mck mcm mco mcr mcs mcu mea meb mec mee mej mek mem meo mer mes meu mjb mjc mje mjj mjk mjm mjr mjs mka mkb mkc mke mkk mkm mko mkr mks mku mma mmb mmc mme mmj mmk mmm mmo mmr mms mmu moa mob moc moe mok mom moo mor mos mou mra mrb mrc mre mrj mrk mrm mro mrr mrs mru msa msb msc mse msj msk msm mso msr mss msu mua mub muc mue muj muk mum mur mus muu oaa oab oac oae oaj oak oam oao oar oas oau ob- oba obb obc obe obj obk obm obo obr obs obu oc- oca ocb occ ocj ock ocm oco ocr ocs ocu oea oeb oec oee oem oeo oer oes oja ojb ojc oje ojm ojo ojs oju oka okb okc oke okj okk oko okr oks oku om- oma omb omc ome omj omm omo omr oms omu oo- ooa oob ooc ook oom ooo oor oos or- ora orb orc ore ork orm oro orr ors oru os- osa osb osc ose osj osk osm oso osr oss osu ou- oua ouc oue ouk oum ouo our ous ra- raa rab rac rae raj rak ram rao rar ras rau rba rbb rbc rbe rbk rbm rbo rbr rbs rbu rca rcb rcc rce rcj rcm rco rcr rcs rcu re- rea reb rec ree rek rem reo rer res reu rja rjc rjk rjm rjr rkb rkc rke rkk rkm rko rks rku rma rmb rmc rme rmm rmo rmr rms roa rob roc roe roj rok rom roo ror ros rou rra rrb rrc rrk rrm rrr rrs rru rsa rsb rsc rse rsj rsk rsm rso rsr rss rsu rua rub ruc rue ruk rum ruo rur rus