-er a-a a-b a-i a-t aaa aab aae aag aai aam aan aar aas aat ab- aba abb abe abg abi abm abn abr abs abt aea aeb aee aeg aei aem aen aer aes aet ag- aga agb age agg agi agm agn agr ags agt ai- aia aib aie aig aii aim ain air ais ait ama amb ame amg ami amm amn amr ams amt an- ana anb ane ang ani anm ann anr ans ant ar- ara arb are arg ari arm arn arr ars art as- asa asb ase asg asi asm asn asr ass ast at- ata atb ate atg ati atm atn atr ats att baa bab bae bag bai bam ban bar bas bat bba bbb bbe bbg bbi bbm bbn bbr bbs bbt be- bea beb bee beg bei bem ben ber bes bet bga bgb bge bgg bgi bgm bgn bgr bgs bgt bi- bia bib bie big bii bim bin bir bis bit bma bmb bme bmg bmi bmm bmn bmr bms bmt bna bnb bne bng bni bnn bnr bns bnt bra brb bre brg bri brm brn brr brs brt bsa bsb bse bsg bsi bsm bsn bsr bss bst bta btb bte btg bti btm btn btr bts btt eaa eab eae eag eai eam ean ear eas eat eba ebb ebe ebg ebi ebm ebn ebr ebs ebt eea eeb eee eeg eem een eer ees eet ega egb ege egg egi egm egn egr egs egt eia eib eie eig eii eim ein eir eis eit em- ema emb eme emg emi emm emn emr ems emt en- ena enb ene eng eni enm enn enr ens ent era erb ere erg eri erm ern err ers ert es- esa esb ese esg esi esm esn esr ess est eta etb ete etg eti etm etn etr ets ett gaa gab gae gag gai gam gan gar gas gat gba gbe gbg gbi gbm gbn gbr gbs gbt ge- gea geb gee geg gei gem gen ger ges get gga ggb ggg ggi ggm ggn ggr ggs ggt gia gib gie gig gii gim gin gir gis git gma gmb gme gmg gmi gmm gmn gmr gms gmt gna gnb gne gni gnm gnn gnr gns gnt gra grb gre grg gri grm grn grr grs grt gsa gsb gse gsg gsi gsm gsn gsr gss gst gta gtb gte gtg gti gtm gtn gtr gts gtt ia- iaa iab iae iag iai iam ian iar ias iat iba ibb ibe ibg ibi ibm ibn ibr ibs ibt ie- iea iee ieg iei iem ien ier ies iet iga igb ige igg igi igm ign igr igs igt iia iib iie iii iim iin iir iis iit im- ima imb ime img imi imm imn ims imt in- ina inb ine ing ini inm inn inr ins int ir- ira irb ire irg iri irm irn irr irs irt is- isa isb ise isg isi ism isn isr iss ist ita itb ite itg iti itm itn its itt m-r maa mab mae mag mai mam man mar mas mat mba mbb mbe mbg mbi mbm mbr mbs mbt mea meb mee meg mei mem men mer mes met mga mgb mge mgi mgm mgn mgr mgs mgt mi- mia mib mie mig mii mim min mir mis mit mma mmb mme mmg mmi mmm mmn mmr mms mmt mna mnb mne mng mni mnm mnn mnr mns mnt mra mrb mre mrg mri mrm mrn mrr mrs mrt msa msb mse msg msi msm msn msr mss mst mta mtb mte mtg mti mtm mtn mtr mts mtt n-i naa nab nae nag nai nam nan nar nas nat nba nbb nbe nbg nbi nbm nbn nbr nbs nbt ne- nea neb nee neg nei nem nen ner nes net nga ngb nge ngg ngi ngm ngn ngs ngt nia nib nie nig nii nim nin nir nis nit nma nmb nme nmg nmi nmm nmn nmr nms nmt nna nnb nne nng nni nnm nnn nns nnt nra nrb nre nrg nri nrm nrn nrr nrs nrt nsa nsb nse nsg nsi nsm nsn nsr nss nst nta ntb nte ntg nti ntm ntn ntr nts ntt ra- raa rab rae rag rai ram ran rar ras rat rba rbb rbe rbg rbi rbm rbn rbr rbs rbt re- rea reb ree reg rei rem ren rer res ret rga rgb rge rgg rgi rgn rgr rgs rgt ria rib rie rig rii rim rin rir ris rit rma rmb rme rmg rmi rmm rmn rmr rms rmt rna rnb rng rni rnm rnn rnr rns rnt rra rrb rrg rri rrm rrn rrr rrs rrt rsa rsb rse rsg rsi rsm rsn rsr rss rst rta rtb rte rtg rti rtm rtn rtr rts rtt saa sab sae sag sai sam san sar sas sat sba sbb sbe sbg sbi sbm sbn sbr sbs sbt se- sea seb see seg sei sem sen ser ses set sga sgb sge sgg sgi sgm sgn sgr sgs sgt sia sib sie sig sii sim sin sir sis sit sma smb sme smg smi smm smn smr sms smt sna snb sne sng sni snm snn snr sns snt sr- sra srb sre srg sri srm srn srr srs srt ss- ssa ssb sse ssg ssi ssm ssn ssr sss sst sta stb ste stg sti stm stn str sts stt taa tab tae tag tai tam tan tar tas tat tba tbb tbe tbg tbi tbm tbn tbr tbs tbt te- tea teb tee teg tei tem ten ter tes tet tga tgb tge tgg tgi tgm tgn tgr tgs tgt tia tib tie tig tii tim tin tir tis tit tma tmb tme tmg tmi tmm tmn tmr tms tmt tna tnb tne tng tni tnm tnn tnr tns tnt tra trb tre trg tri trm trn trr trs trt tsa tsb