-er a-a a-b a-c aaa aab aac aae aag aam aan aar aas aau ab- aba abb abc abe abg abm abn abr abs abu ac- aca acb acc ace acg acm acn acr acs acu aea aeb aec aee aeg aem aen aer aes aeu ag- aga agb agc age agg agm agn agr ags agu ama amb amc ame amg amm amn amr ams amu an- ana anb anc ane ang anm ann anr ans anu ar- ara arb arc are arg arm arn arr ars aru as- asa asb asc ase asg asm asn asr ass asu au- aua aub auc aue aug aum aun aur aus b-u baa bab bac bae bag bam ban bar bas bau bba bbb bbc bbe bbg bbm bbn bbr bbs bbu bca bcb bcc bce bcg bcm bcn bcr bcs bcu be- bea beb bec bee beg bem ben ber bes beu bga bgb bgc bge bgg bgm bgn bgr bgs bgu bma bmb bmc bme bmg bmm bmn bmr bms bmu bna bnb bnc bne bng bnn bnr bns bnu bra brb bre brg brm brn brr brs bru bsa bsb bsc bse bsg bsm bsn bsr bss bsu bua bub buc bue bug bum bun bur bus buu c-- caa cab cac cae cag cam can car cas cau cba cbb cbc cbe cbg cbm cbn cbr cbs cbu cca ccb ccc cce ccg ccm ccn ccr ccs ccu ce- cea ceb cec cee ceg cem cen cer ces ceu cga cgb cgc cge cgg cgm cgn cgr cgs cgu cma cmb cmc cme cmg cmm cmn cmr cms cmu cn- cna cnb cnc cne cng cnm cnn cnr cns cnu cra crb crc cre crg crm crn crr crs cru csa csb csc cse csg csm csn csr css csu cua cub cuc cue cug cum cun cur cus cuu eaa eab eac eae eag eam ean ear eas eau eba ebb ebc ebe ebg ebm ebn ebr ebs ebu ec- eca ecb ecc ece ecg ecm ecn ecr ecs ecu eea eeb eec eee eeg eem een eer ees ega egb egc ege egg egm egn egr egs egu em- ema emb emc eme emg emm emn emr ems emu en- ena enb enc ene eng enm enn enr ens enu era erb erc ere erg erm ern err ers eru es- esa esb esc ese esg esm esn esr ess esu eu- eua eub euc eue eug eun eur eus gaa gab gac gae gag gam gan gar gas gau gba gbc gbe gbg gbm gbn gbr gbs gbu gca gcb gcc gce gcg gcm gcn gcr gcs gcu ge- gea geb gec gee geg gem gen ger ges geu gga ggb ggc ggg ggm ggn ggr ggs ggu gma gmb gmc gme gmg gmm gmn gmr gms gna gnb gnc gne gnm gnn gnr gns gnu gra grb grc gre grg grm grn grr grs gru gsa gsb gsc gse gsg gsm gsn gsr gss gsu gu- gua gub guc gue gug gum gun gur gus guu m-r maa mab mac mae mag mam man mar mas mau mba mbb mbc mbe mbg mbm mbr mbs mbu mc- mca mcb mcc mce mcg mcm mcn mcr mcs mcu mea meb mec mee meg mem men mer mes meu mga mgb mgc mge mgm mgn mgr mgs mgu mma mmb mmc mme mmg mmm mmn mmr mms mmu mna mnb mnc mne mng mnm mnn mnr mns mnu mra mrb mrc mre mrg mrm mrn mrr mrs mru msa msb msc mse msg msm msn msr mss msu mua mub muc mue mug mum mun mur mus muu naa nab nac nae nag nam nan nar nas nau nba nbb nbc nbe nbg nbm nbn nbr nbs nbu nca ncb ncc nce ncg ncm ncn ncr ncs ncu ne- nea neb nec nee neg nem nen ner nes neu nga ngb ngc nge ngg ngm ngn ngs ngu nma nmb nmc nme nmg nmm nmn nmr nms nmu nna nnb nnc nne nng nnm nnn nns nnu nra nrb nrc nre nrg nrm nrn nrr nrs nru nsa nsb nsc nse nsg nsm nsn nsr nss nsu nua nub nuc nue nug num nun nur nus nuu ra- raa rab rac rae rag ram ran rar ras rau rba rbb rbc rbe rbg rbm rbn rbr rbs rbu rca rcb rcc rce rcg rcm rcn rcr rcs rcu re- rea reb rec ree reg rem ren rer res reu rga rgb rgc rge rgg rgn rgr rgs rma rmb rmc rme rmg rmm rmn rmr rms rna rnb rnc rng rnm rnn rnr rns rnu rra rrb rrc rrg rrm rrn rrr rrs rru rsa rsb rsc rse rsg rsm rsn rsr rss rsu rua rub ruc rue rug rum run rur rus ruu saa sab sac sae sag sam san sar sas sau sba sbb sbc sbe sbg sbm sbn sbr sbs sbu sca scb scc sce scg scm scn scr scs scu se- sea seb sec see seg sem sen ser ses seu sga sgb sgc sge sgg sgm sgn sgr sgs sgu sma smb smc sme smg smm smn smr sms smu sna snb snc sne sng snm snn snr sns snu sr- sra srb src sre srg srm srn srr srs ss- ssa ssb ssc sse ssg ssm ssn ssr sss ssu sua sub suc sue sug sum sun sur sus suu ua- uaa uab uac uae uag uam uan uar uas uau uba ubb ubc ube ubg ubn ubr ubs ubu uca ucb ucc uce ucg ucm ucn ucr ucs ucu uea ueb uec uee ueg uem uen uer ues uga ugb ugc uge ugg ugm ugn ugr ugs ugu um- uma umb umc ume umg umm umn umr ums umu un- una unb unc une ung unm unn unr uns unu ur- ura urb urc ure urg urm urn urr urs uru usa usb usc use usg usm usn