-er a-a a-b a-c a-t aaa aab aac aae aag aak aan aar aas aat aau ab- aba abb abc abe abg abk abn abr abs abt abu ac- aca acb acc ace acg ack acn acr acs act acu aea aeb aec aee aeg aek aen aer aes aet aeu ag- aga agb agc age agg agk agn agr ags agt agu aka akb akc ake akg akk akn akr aks aku an- ana anb anc ane ang ank ann anr ans ant anu ar- ara arb arc are arg ark arn arr ars art aru as- asa asb asc ase asg ask asn asr ass ast asu at- ata atb atc ate atg atn atr ats att atu au- aua aub auc aue aug auk aun aur aus aut b-u baa bab bac bae bag bak ban bar bas bat bau bba bbb bbc bbe bbg bbk bbn bbr bbs bbt bbu bca bcb bcc bce bcg bck bcn bcr bcs bct bcu be- bea beb bec bee beg bek ben ber bes bet beu bga bgb bgc bge bgg bgk bgn bgr bgs bgt bgu bka bkb bkc bke bkg bkk bkn bkr bks bkt bna bnb bnc bne bng bnk bnn bnr bns bnt bnu bra brb bre brg brk brn brr brs brt bru bsa bsb bsc bse bsg bsk bsn bsr bss bst bsu bta btb btc bte btg btk btn btr bts btt btu bua bub buc bue bug buk bun bur bus but buu c-- caa cab cac cae cag cak can car cas cat cau cba cbb cbc cbe cbg cbk cbn cbr cbs cbt cbu cca ccb ccc cce ccg cck ccn ccr ccs cct ccu ce- cea ceb cec cee ceg cek cen cer ces cet ceu cga cgb cgc cge cgg cgn cgr cgs cgt cgu cka ckb ckc cks ckt cn- cna cnb cnc cne cng cnn cnr cns cnt cnu cra crb crc cre crg crk crn crr crs crt cru csa csb csc cse csg csk csn csr css cst csu cta ctb ctc cte ctg ctk ctn ctr cts ctt ctu cua cub cuc cue cug cuk cun cur cus cut cuu eaa eab eac eae eag eak ean ear eas eat eau eba ebb ebc ebe ebg ebk ebn ebr ebs ebt ebu ec- eca ecb ecc ece ecg eck ecn ecr ecs ect ecu eea eeb eec eee eeg eek een eer ees eet ega egb egc ege egg egn egr egs egt egu eka ekb ekc eke ekg ekr eks ekt eku en- ena enb enc ene eng enk enn enr ens ent enu era erb erc ere erg erk ern err ers ert eru es- esa esb esc ese esg esk esn esr ess est esu eta etb etc ete etg etk etn etr ets ett etu eu- eua eub euc eue eug eun eur eus eut gaa gab gac gae gag gak gan gar gas gat gau gba gbc gbe gbg gbk gbn gbr gbs gbt gbu gca gcb gcc gce gcg gck gcn gcr gcs gct gcu ge- gea geb gec gee geg gek gen ger ges get geu gga ggb ggc ggg ggn ggr ggs ggt ggu gka gkb gkn gks gkt gna gnb gnc gne gnn gnr gns gnt gnu gra grb grc gre grg grk grn grr grs grt gru gsa gsb gsc gse gsg gsk gsn gsr gss gst gsu gta gtb gtc gte gtg gtk gtn gtr gts gtt gtu gu- gua gub guc gue gug guk gun gur gus gut guu k-t ka- kaa kab kac kae kag kak kan kar kas kat kau kba kbb kbc kbe kbk kbn kbr kbs kbu kca kcb kcc kce kcg kck kcn kcr kcs kct kcu ke- kea keb kec kee keg kek ken ker kes ket kga kgb kgc kgs kgu kkb kkc kke kkk kkn kkr kks kkt kku kn- kna knc kne kng knk knn knr knt knu kra krc krg krk krn krr krs krt kru ksa ksb ksc kse ksg ksk ksn ksr kss kst ksu kta ktb ktc kte ktg ktk ktn ktr kts ktt ktu kub kuc kue kug kuk kun kur kus kut kuu naa nab nac nae nag nak nan nar nas nat nau nba nbb nbc nbe nbg nbk nbn nbr nbs nbt nbu nca ncb ncc nce ncg nck ncn ncr ncs nct ncu ne- nea neb nec nee neg nek nen ner nes net neu nga ngb ngc nge ngg ngk ngn ngs ngt ngu nka nkc nke nkk nkn nkr nks nkt nku nna nnb nnc nne nng nnk nnn nns nnt nnu nra nrb nrc nre nrg nrk nrn nrr nrs nrt nru nsa nsb nsc nse nsg nsk nsn nsr nss nst nsu nta ntb ntc nte ntg ntk ntn ntr nts ntt ntu nua nub nuc nue nug nuk nun nur nus nut nuu ra- raa rab rac rae rag rak ran rar ras rat rau rba rbb rbc rbe rbg rbk rbn rbr rbs rbt rbu rca rcb rcc rce rcg rcn rcr rcs rct rcu re- rea reb rec ree reg rek ren rer res ret reu rga rgb rgc rge rgg rgk rgn rgr rgs rgt rkb rkc rke rkg rkk rks rkt rku rna rnb rnc rng rnn rnr rns rnt rnu rra rrb rrc rrg rrk rrn rrr rrs rrt rru rsa rsb rsc rse rsg rsk rsn rsr rss rst rsu rta rtb rtc rte rtg rtk rtn rtr rts rtt rtu rua rub ruc rue rug ruk run rur rus rut ruu saa sab sac sae sag sak san sar sas sat sau sba sbb sbc sbe sbg sbk sbn sbr sbs sbt sbu sca scb scc sce scg sck scn scr scs sct scu se- sea seb sec see seg sek sen ser ses set seu sga sgb sgc sge sgg sgk sgn sgr sgs sgt sgu sk- ska skb