-al -er a-a a-b a-c aaa aab aac aae aag aal aan aar aas aau ab- aba abb abc abe abg abl abn abr abs abu ac- aca acb acc ace acg acl acn acr acs acu aea aeb aec aee aeg ael aen aer aes aeu ag- aga agb agc age agg agl agn agr ags agu al- ala alb alc ale alg all aln alr als alu an- ana anb anc ane ang anl ann anr ans anu ar- ara arb arc are arg arl arn arr ars aru as- asa asb asc ase asg asl asn asr ass asu au- aua aub auc aue aug aul aun aur aus b-u baa bab bac bae bag bal ban bar bas bau bba bbb bbc bbe bbg bbl bbn bbr bbs bbu bca bcb bcc bce bcg bcl bcn bcr bcs bcu be- bea beb bec bee beg bel ben ber bes beu bga bgb bgc bge bgg bgl bgn bgr bgs bgu bla blb blc ble blg bll bln blr bls blu bna bnb bnc bne bng bnl bnn bnr bns bnu bra brb bre brg brl brn brr brs bru bsa bsb bsc bse bsg bsl bsn bsr bss bsu bua bub buc bue bug bul bun bur bus buu c-- caa cab cac cae cag cal can car cas cau cba cbb cbc cbe cbg cbl cbn cbr cbs cbu cca ccb ccc cce ccg ccl ccn ccr ccs ccu ce- cea ceb cec cee ceg cel cen cer ces ceu cga cgb cgc cge cgg cgl cgn cgr cgs cgu cl- cla clb clc cle clg cll cln clr cls clu cn- cna cnb cnc cne cng cnl cnn cnr cns cnu cra crb crc cre crg crl crn crr crs cru csa csb csc cse csg csl csn csr css csu cua cub cuc cue cug cul cun cur cus cuu eaa eab eac eae eag eal ean ear eas eau eba ebb ebc ebe ebg ebl ebn ebr ebs ebu ec- eca ecb ecc ece ecg ecl ecn ecr ecs ecu eea eeb eec eee eeg eel een eer ees ega egb egc ege egg egl egn egr egs egu ela elb elc ele elg ell eln elr els elu en- ena enb enc ene eng enl enn enr ens enu era erb erc ere erg erl ern err ers eru es- esa esb esc ese esg esl esn esr ess esu eu- eua eub euc eue eug eul eun eur eus gaa gab gac gae gag gal gan gar gas gau gba gbc gbe gbg gbl gbn gbr gbs gbu gca gcb gcc gce gcg gcl gcn gcr gcs gcu ge- gea geb gec gee geg gel gen ger ges geu gga ggb ggc ggg ggn ggr ggs ggu gla glb glc gle glg gll gln glr gls glu gna gnb gnc gne gnl gnn gnr gns gnu gra grb grc gre grg grl grn grr grs gru gsa gsb gsc gse gsg gsl gsn gsr gss gsu gu- gua gub guc gue gug gul gun gur gus guu la- laa lab lac lae lag lal lan lar las lau lba lbb lbc lbe lbg lbl lbr lbs lbu lca lcb lcc lce lcg lcl lcn lcr lcs lcu lea leb lec lee leg lel len ler les leu lga lgb lgc lge lgg lgl lgn lgr lgs lgu lla llb llc lle llg lll lln llr lls llu lna lnb lnc lne lng lnl lnn lnr lns lnu lra lrb lrc lrg lrn lrr lrs lru lsa lsb lsc lse lsg lsl lsn lsr lss lsu lua lub luc lue lug lul lun lur lus luu naa nab nac nae nag nal nan nar nas nau nba nbb nbc nbe nbg nbl nbn nbr nbs nbu nca ncb ncc nce ncg ncl ncn ncr ncs ncu ne- nea neb nec nee neg nel nen ner nes neu nga ngb ngc nge ngg ngl ngn ngs ngu nla nlb nlc nle nlg nll nln nlr nls nlu nna nnb nnc nne nng nnl nnn nns nnu nra nrb nrc nre nrg nrl nrn nrr nrs nru nsa nsb nsc nse nsg nsl nsn nsr nss nsu nua nub nuc nue nug nul nun nur nus nuu ra- raa rab rac rae rag ral ran rar ras rau rba rbb rbc rbe rbg rbl rbn rbr rbs rbu rca rcb rcc rce rcg rcl rcn rcr rcs rcu re- rea reb rec ree reg rel ren rer res reu rga rgb rgc rge rgg rgn rgr rgs rla rlc rle rlg rll rln rlr rls rlu rna rnb rnc rng rnn rnr rns rnu rra rrb rrc rrg rrl rrn rrr rrs rru rsa rsb rsc rse rsg rsl rsn rsr rss rsu rua rub ruc rue rug run rur rus ruu saa sab sac sae sag sal san sar sas sau sba sbb sbc sbe sbg sbl sbn sbr sbs sbu sca scb scc sce scg scl scn scr scs scu se- sea seb sec see seg sel sen ser ses seu sga sgb sgc sge sgg sgl sgn sgr sgs sgu sla slb slc sle slg sll sln slr sls slu sna snb snc sne sng snl snn snr sns snu sr- sra srb src sre srg srl srn srr srs ss- ssa ssb ssc sse ssg ssl ssn ssr sss ssu sua sub suc sue sug sul sun sur sus suu ua- uaa uab uac uae uag ual uan uar uas uau uba ubb ubc ube ubg ubl ubn ubr ubs ubu uca ucb ucc uce ucg ucl ucn ucr ucs ucu uea ueb uec uee ueg uel uen uer ues uga ugb ugc uge ugg ugl ugn ugr ugs ugu ula ulb ulc ule ulg ull uln ulr uls ulu un- una unb unc une ung unl unn unr uns unu ur- ura urb urc ure urg url urn urr urs uru usa usb usc use usg usl usn