-er a-a a-b a-i a-t aaa aab aad aae aag aai aan aar aas aat ab- aba abb abd abe abg abi abn abr abs abt ad- ada adb add ade adg adi adn adr ads adt aea aeb aed aee aeg aei aen aer aes aet ag- aga agb agd age agg agi agn agr ags agt ai- aia aib aid aie aig aii ain air ais ait an- ana anb and ane ang ani ann anr ans ant ar- ara arb ard are arg ari arn arr ars art as- asa asb asd ase asg asi asn asr ass ast at- ata atb atd ate atg ati atn atr ats att baa bab bad bae bag bai ban bar bas bat bba bbb bbd bbe bbg bbi bbn bbr bbs bbt bda bdb bdd bde bdg bdi bdr bds bdt be- bea beb bed bee beg bei ben ber bes bet bga bgb bgd bge bgg bgi bgn bgr bgs bgt bi- bia bib bid bie big bii bin bir bis bit bna bnb bnd bne bng bni bnn bnr bns bnt bra brb brd bre brg bri brn brr brs brt bsa bsb bsd bse bsg bsi bsn bsr bss bst bta btb btd bte btg bti btn btr bts btt daa dab dad dae dag dai dan dar das dat dba dbb dbd dbe dbg dbi dbn dbr dbs dbt dda ddb ddd dde ddg ddi ddn ddr dds ddt de- dea deb ded dee deg dei den der des det dga dgd dge dgg dgi dgn dgr dgs dgt di- dia dib did die dig dii din dir dis dit dna dnb dnd dne dng dni dnn dnr dns dnt dra drb drd dre drg dri drn drr drs drt dsa dsb dsd dse dsg dsi dsn dsr dss dst dta dtb dtd dte dtg dti dtn dtr dts dtt eaa eab ead eae eag eai ean ear eas eat eba ebb ebd ebe ebg ebi ebn ebr ebs ebt ed- eda edb edd ede edg edi edn edr eds edt eea eeb eed eee eeg een eer ees eet ega egb egd ege egg egi egn egr egs egt eia eib eid eie eig eii ein eir eis eit en- ena enb end ene eng eni enn enr ens ent era erb erd ere erg eri ern err ers ert es- esa esb esd ese esg esi esn esr ess est eta etb etd ete etg eti etn etr ets ett g-d gaa gab gad gae gag gai gan gar gas gat gba gbd gbe gbg gbi gbn gbr gbs gbt gda gdb gdd gde gdi gdn gdr gds gdt ge- gea geb ged gee geg gei gen ger ges get gga ggb ggd ggg ggi ggn ggr ggs ggt gia gib gid gie gig gii gin gir gis git gna gnb gnd gne gni gnn gnr gns gnt gra grb grd gre grg gri grn grr grs grt gsa gsb gsd gse gsg gsi gsn gsr gss gst gta gtb gtd gte gtg gti gtn gtr gts gtt i-d ia- iaa iab iad iae iag iai ian iar ias iat iba ibb ibd ibe ibg ibi ibn ibr ibs ibt ida idb idd ide idg idi idn idr ids idt ie- iea ied iee ieg iei ien ier ies iet iga igb igd ige igg igi ign igr igs igt iia iib iid iie iii iin iir iis iit in- ina inb ind ine ing ini inn inr ins int ir- ira irb ird ire irg iri irn irr irs irt is- isa isb isd ise isg isi isn isr iss ist ita itb itd ite itg iti itn its itt n-i naa nab nad nae nag nai nan nar nas nat nba nbb nbd nbe nbg nbi nbn nbr nbs nbt nda ndb ndd nde ndg ndi ndn ndr nds ndt ne- nea neb ned nee neg nei nen ner nes net nga ngb ngd nge ngg ngi ngn ngs ngt nia nib nid nie nig nii nin nir nis nit nna nnb nne nng nni nnn nns nnt nra nrb nrd nre nrg nri nrn nrr nrs nrt nsa nsb nsd nse nsg nsi nsn nsr nss nst nta ntb ntd nte ntg nti ntn ntr nts ntt ra- raa rab rad rae rag rai ran rar ras rat rba rbb rbd rbe rbg rbi rbn rbr rbs rbt rda rdb rdd rde rdg rdi rdn rdr rds rdt re- rea reb red ree reg rei ren rer res ret rga rgb rgd rge rgg rgi rgn rgr rgs rgt ria rib rid rie rig rii rin rir ris rit rna rnb rnd rng rni rnn rnr rns rnt rra rrb rrd rrg rri rrn rrr rrs rrt rsa rsb rsd rse rsg rsi rsn rsr rss rst rta rtb rtd rte rtg rti rtn rtr rts rtt saa sab sad sae sag sai san sar sas sat sba sbb sbd sbe sbg sbi sbn sbr sbs sbt sda sdb sdd sde sdg sdi sdn sdr sds sdt se- sea seb sed see seg sei sen ser ses set sga sgb sgd sge sgg sgi sgn sgr sgs sgt sia sib sid sie sig sii sin sir sis sit sna snb snd sne sng sni snn snr sns snt sr- sra srb srd sre srg sri srn srr srs srt ss- ssa ssb ssd sse ssg ssi ssn ssr sss sst sta stb std ste stg sti stn str sts stt taa tab tad tae tag tai tan tar tas tat tba tbb tbd tbe tbg tbi tbn tbr tbs tbt tda tdb tdd tde tdg tdi tdn tdr tds tdt te- tea teb ted tee teg tei ten ter tes tet tga tgb tge tgg tgi tgn tgr tgs tgt tia tib tid tie tig tii tin tir tis tit tna tnb tnd tne tng tni tnn tnr tns tnt tra trb trd tre trg tri trn trr trs trt