-er -ic a-a a-b a-c a-i a-t aaa aab aac aae aag aai aan aar aat aau ab- aba abb abc abe abg abi abn abr abt abu ac- aca acb acc ace acg aci acn acr act acu aea aeb aec aee aeg aei aen aer aet aeu ag- aga agb agc age agg agi agn agr agt agu ai- aia aib aic aie aig aii ain air ait aiu an- ana anb anc ane ang ani ann anr ant anu ar- ara arb arc are arg ari arn arr art aru at- ata atb atc ate atg ati atn atr att atu au- aua aub auc aue aug aui aun aur aut b-u baa bab bac bae bag bai ban bar bat bau bba bbb bbc bbe bbg bbi bbn bbr bbt bbu bca bcb bcc bce bcg bci bcn bcr bct bcu be- bea beb bec bee beg bei ben ber bet beu bga bgb bgc bge bgg bgi bgn bgr bgt bgu bi- bia bib bic bie big bii bin bir bit biu bna bnb bnc bne bng bni bnn bnr bnt bnu bra brb bre brg bri brn brr brt bru bta btb btc bte btg bti btn btr btt btu bua bub buc bue bug bui bun bur but buu c-- caa cab cac cae cag cai can car cat cau cba cbb cbc cbe cbg cbi cbn cbr cbt cbu cca ccb ccc cce ccg cci ccn ccr cct ccu ce- cea ceb cec cee ceg cei cen cer cet ceu cga cgb cgc cge cgg cgi cgn cgr cgt cgu ci- cia cib cic cie cig cii cin cir cit ciu cn- cna cnb cnc cne cng cni cnn cnr cnt cnu cra crb crc cre crg cri crn crr crt cru cta ctb ctc cte ctg cti ctn ctr ctt ctu cua cub cuc cue cug cui cun cur cut cuu eaa eab eac eae eag eai ean ear eat eau eba ebb ebc ebe ebg ebi ebn ebr ebt ebu ec- eca ecb ecc ece ecg eci ecn ecr ect ecu eea eeb eec eee eeg een eer eet ega egb egc ege egg egi egn egr egt egu eia eib eic eie eig eii ein eir eit eiu en- ena enb enc ene eng eni enn enr ent enu era erb erc ere erg eri ern err ert eru eta etb etc ete etg eti etn etr ett etu eu- eua eub euc eue eug eui eun eur eut gaa gab gac gae gag gai gan gar gat gau gba gbc gbe gbg gbi gbn gbr gbt gbu gca gcb gcc gce gcg gci gcn gcr gct gcu ge- gea geb gec gee geg gei gen ger get geu gga ggb ggc ggg ggi ggn ggr ggt ggu gia gib gic gie gig gii gin gir git giu gna gnb gnc gne gni gnn gnr gnt gnu gra grb grc gre grg gri grn grr grt gru gta gtb gtc gte gtg gti gtn gtr gtt gtu gu- gua gub guc gue gug gui gun gur gut guu ia- iaa iab iac iae iag iai ian iar iat iau iba ibb ibc ibe ibg ibi ibn ibr ibt ibu ica icb icc ice icg ici icn icr ict icu ie- iea iec iee ieg iei ien ier iet iga igb igc ige igg igi ign igr igt igu iia iib iic iie iii iin iir iit iiu in- ina inb inc ine ing ini inn inr int inu ir- ira irb irc ire irg iri irn irr irt iru ita itb itc ite itg iti itn itt itu iu- iua iub iuc iue iug iui iur iut n-i naa nab nac nae nag nai nan nar nat nau nba nbb nbc nbe nbg nbi nbn nbr nbt nbu nca ncb ncc nce ncg nci ncn ncr nct ncu ne- nea neb nec nee neg nei nen ner net neu nga ngb ngc nge ngg ngi ngn ngt ngu nia nib nic nie nig nii nin nir nit niu nna nnb nnc nne nng nni nnn nnt nnu nra nrb nrc nre nrg nri nrn nrr nrt nru nta ntb ntc nte ntg nti ntn ntr ntt ntu nua nub nuc nue nug nui nun nur nut nuu ra- raa rab rac rae rag rai ran rar rat rau rba rbb rbc rbe rbg rbi rbn rbr rbt rbu rca rcb rcc rce rcg rci rcn rcr rct rcu re- rea reb rec ree reg rei ren rer ret reu rga rgb rgc rge rgg rgi rgn rgr rgt ria rib ric rie rig rii rin rir rit rna rnb rnc rng rni rnn rnr rnt rnu rra rrb rrc rrg rri rrn rrr rrt rru rta rtb rtc rte rtg rti rtn rtr rtt rtu rua rub ruc rue rug rui run rur rut ruu taa tab tac tae tag tai tan tar tat tau tba tbb tbc tbe tbg tbi tbn tbr tbt tbu tca tcb tcc tce tcg tci tcn tcr tct tcu te- tea teb tec tee teg tei ten ter tet teu tga tgb tgc tge tgg tgi tgn tgr tgt tgu tia tib tic tie tig tii tin tir tit tiu tna tnb tnc tne tng tni tnn tnr tnt tra trb trc tre trg tri trn trr trt tru tta ttb ttc tte ttg tti ttn ttr ttt ttu tua tub tuc tue tug tui tun tur tut tuu ua- uaa uab uac uae uag uai uan uar uat uau uba ubb ubc ube ubg ubi ubn ubr ubt ubu uca ucb ucc uce ucg uci ucn ucr uct ucu uea ueb uec uee ueg uei uen uer uet uga ugb ugc uge ugg ugi ugn ugr ugt ugu uia uib uic uie uig uii uin uir uit uiu un- una unb unc une ung uni unn unr unt unu ur- ura urb urc ure urg uri urn urr urt uru uta utb