-al -er a-a a-b a-c a-t aaa aab aac aae aag aal aan aar aat aau ab- aba abb abc abe abg abl abn abr abt abu ac- aca acb acc ace acg acl acn acr act acu aea aeb aec aee aeg ael aen aer aet aeu ag- aga agb agc age agg agl agn agr agt agu al- ala alb alc ale alg all aln alr alt alu an- ana anb anc ane ang anl ann anr ant anu ar- ara arb arc are arg arl arn arr art aru at- ata atb atc ate atg atl atn atr att atu au- aua aub auc aue aug aul aun aur aut b-u baa bab bac bae bag bal ban bar bat bau bba bbb bbc bbe bbg bbl bbn bbr bbt bbu bca bcb bcc bce bcg bcl bcn bcr bct bcu be- bea beb bec bee beg bel ben ber bet beu bga bgb bgc bge bgg bgl bgn bgr bgt bgu bla blb blc ble blg bll bln blr blt blu bna bnb bnc bne bng bnl bnn bnr bnt bnu bra brb bre brg brl brn brr brt bru bta btb btc bte btg btl btn btr btt btu bua bub buc bue bug bul bun bur but buu c-- caa cab cac cae cag cal can car cat cau cba cbb cbc cbe cbg cbl cbn cbr cbt cbu cca ccb ccc cce ccg ccl ccn ccr cct ccu ce- cea ceb cec cee ceg cel cen cer cet ceu cga cgb cgc cge cgg cgl cgn cgr cgt cgu cl- cla clb clc cle clg cll cln clr clt clu cn- cna cnb cnc cne cng cnl cnn cnr cnt cnu cra crb crc cre crg crl crn crr crt cru cta ctb ctc cte ctg ctl ctn ctr ctt ctu cua cub cuc cue cug cul cun cur cut cuu eaa eab eac eae eag eal ean ear eat eau eba ebb ebc ebe ebg ebl ebn ebr ebt ebu ec- eca ecb ecc ece ecg ecl ecn ecr ect ecu eea eeb eec eee eeg eel een eer eet ega egb egc ege egg egl egn egr egt egu ela elb elc ele elg ell eln elr elt elu en- ena enb enc ene eng enl enn enr ent enu era erb erc ere erg erl ern err ert eru eta etb etc ete etg etl etn etr ett etu eu- eua eub euc eue eug eul eun eur eut gaa gab gac gae gag gal gan gar gat gau gba gbc gbe gbg gbl gbn gbr gbt gbu gca gcb gcc gce gcg gcl gcn gcr gct gcu ge- gea geb gec gee geg gel gen ger get geu gga ggb ggc ggg ggn ggr ggt ggu gla glb glc gle glg gll gln glr glt glu gna gnb gnc gne gnl gnn gnr gnt gnu gra grb grc gre grg grl grn grr grt gru gta gtb gtc gte gtg gtl gtn gtr gtt gtu gu- gua gub guc gue gug gul gun gur gut guu la- laa lab lac lae lag lal lan lar lat lau lba lbb lbc lbe lbg lbl lbr lbt lbu lca lcb lcc lce lcg lcl lcn lcr lct lcu lea leb lec lee leg lel len ler let leu lga lgb lgc lge lgg lgl lgn lgr lgt lgu lla llb llc lle llg lll lln llr llt llu lna lnb lnc lne lng lnl lnn lnr lnt lnu lra lrb lrc lrg lrn lrr lrt lru lta ltb ltc lte ltg ltl ltr ltt ltu lua lub luc lue lug lul lun lur lut luu naa nab nac nae nag nal nan nar nat nau nba nbb nbc nbe nbg nbl nbn nbr nbt nbu nca ncb ncc nce ncg ncl ncn ncr nct ncu ne- nea neb nec nee neg nel nen ner net neu nga ngb ngc nge ngg ngl ngn ngt ngu nla nlb nlc nle nlg nll nln nlr nlt nlu nna nnb nnc nne nng nnl nnn nnt nnu nra nrb nrc nre nrg nrl nrn nrr nrt nru nta ntb ntc nte ntg ntn ntr ntt ntu nua nub nuc nue nug nul nun nur nut nuu ra- raa rab rac rae rag ral ran rar rat rau rba rbb rbc rbe rbg rbl rbn rbr rbt rbu rca rcb rcc rce rcg rcl rcn rcr rct rcu re- rea reb rec ree reg rel ren rer ret reu rga rgb rgc rge rgg rgn rgr rgt rla rlc rle rlg rll rln rlr rlt rlu rna rnb rnc rng rnn rnr rnt rnu rra rrb rrc rrg rrl rrn rrr rrt rru rta rtb rtc rte rtg rtl rtn rtr rtt rtu rua rub ruc rue rug run rur rut ruu taa tab tac tae tag tal tan tar tat tau tba tbb tbc tbe tbg tbl tbn tbr tbt tbu tca tcb tcc tce tcg tcl tcn tcr tct tcu te- tea teb tec tee teg tel ten ter tet teu tga tgb tgc tge tgg tgl tgn tgr tgt tgu tla tlc tle tlg tll tln tlr tlt tlu tna tnb tnc tne tng tnl tnn tnr tnt tra trb trc tre trg trl trn trr trt tru tta ttb ttc tte ttg ttl ttn ttr ttt ttu tua tub tuc tue tug tul tun tur tut tuu ua- uaa uab uac uae uag ual uan uar uat uau uba ubb ubc ube ubg ubl ubn ubr ubt ubu uca ucb ucc uce ucg ucl ucn ucr uct ucu uea ueb uec uee ueg uel uen uer uet uga ugb ugc uge ugg ugl ugn ugr ugt ugu ula ulb ulc ule ulg ull uln ulr ult ulu un- una unb unc une ung unl unn unr unt unu ur- ura urb urc ure urg url urn urr urt uru uta utb utc ute utl utn utr utt utu uua uuc uue