-er -ic a-a a-b a-c a-i a-t aaa aab aac aad aae aag aai aar aas aat ab- aba abb abc abd abe abg abi abr abs abt ac- aca acb acc acd ace acg aci acr acs act ad- ada adb adc add ade adg adi adr ads adt aea aeb aec aed aee aeg aei aer aes aet ag- aga agb agc agd age agg agi agr ags agt ai- aia aib aic aid aie aig aii air ais ait ar- ara arb arc ard are arg ari arr ars art as- asa asb asc asd ase asg asi asr ass ast at- ata atb atc atd ate atg ati atr ats att baa bab bac bad bae bag bai bar bas bat bba bbb bbc bbd bbe bbg bbi bbr bbs bbt bca bcb bcc bcd bce bcg bci bcr bcs bct bda bdb bdc bdd bde bdg bdi bdr bds bdt be- bea beb bec bed bee beg bei ber bes bet bga bgb bgc bgd bge bgg bgi bgr bgs bgt bi- bia bib bic bid bie big bii bir bis bit bra brb brd bre brg bri brr brs brt bsa bsb bsc bsd bse bsg bsi bsr bss bst bta btb btc btd bte btg bti btr bts btt c-- caa cab cac cad cae cag cai car cas cat cba cbb cbc cbd cbe cbg cbi cbr cbs cbt cca ccb ccc ccd cce ccg cci ccr ccs cct cda cdb cdc cdd cde cdg cdi cdr cds cdt ce- cea ceb cec ced cee ceg cei cer ces cet cga cgb cgc cgd cge cgg cgi cgr cgs cgt ci- cia cib cic cid cie cig cii cir cis cit cra crb crc crd cre crg cri crr crs crt csa csb csc csd cse csg csi csr css cst cta ctb ctc ctd cte ctg cti ctr cts ctt daa dab dac dad dae dag dai dar das dat dba dbb dbc dbd dbe dbg dbi dbr dbs dbt dca dcb dcc dcd dce dcg dci dcr dcs dct dda ddb ddc ddd dde ddg ddi ddr dds ddt de- dea deb dec ded dee deg dei der des det dga dgc dgd dge dgg dgi dgr dgs dgt di- dia dib dic did die dig dii dir dis dit dra drb drc drd dre drg dri drr drs drt dsa dsb dsc dsd dse dsg dsi dsr dss dst dta dtb dtc dtd dte dtg dti dtr dts dtt eaa eab eac ead eae eag eai ear eas eat eba ebb ebc ebd ebe ebg ebi ebr ebs ebt ec- eca ecb ecc ecd ece ecg eci ecr ecs ect ed- eda edb edc edd ede edg edi edr eds edt eea eeb eec eed eee eeg eer ees eet ega egb egc egd ege egg egi egr egs egt eia eib eic eid eie eig eii eir eis eit era erb erc erd ere erg eri err ers ert es- esa esb esc esd ese esg esi esr ess est eta etb etc etd ete etg eti etr ets ett g-d gaa gab gac gad gae gag gai gar gas gat gba gbc gbd gbe gbg gbi gbr gbs gbt gca gcb gcc gcd gce gcg gci gcr gcs gct gda gdb gdc gdd gde gdi gdr gds gdt ge- gea geb gec ged gee geg gei ger ges get gga ggb ggc ggd ggg ggi ggr ggs ggt gia gib gic gid gie gig gii gir gis git gra grb grc grd gre grg gri grr grs grt gsa gsb gsc gsd gse gsg gsi gsr gss gst gta gtb gtc gtd gte gtg gti gtr gts gtt i-d ia- iaa iab iac iad iae iag iai iar ias iat iba ibb ibc ibd ibe ibg ibi ibr ibs ibt ica icb icc icd ice icg ici icr ics ict ida idb idc idd ide idg idi idr ids idt ie- iea iec ied iee ieg iei ier ies iet iga igb igc igd ige igg igi igr igs igt iia iib iic iid iie iii iir iis iit ir- ira irb irc ird ire irg iri irr irs irt is- isa isb isc isd ise isg isi isr iss ist ita itb itc itd ite itg iti its itt ra- raa rab rac rad rae rag rai rar ras rat rba rbb rbc rbd rbe rbg rbi rbr rbs rbt rca rcb rcc rcd rce rcg rci rcr rcs rct rda rdb rdc rdd rde rdg rdi rdr rds rdt re- rea reb rec red ree reg rei rer res ret rga rgb rgc rgd rge rgg rgi rgr rgs rgt ria rib ric rid rie rig rii rir ris rit rra rrb rrc rrd rrg rri rrr rrs rrt rsa rsb rsc rsd rse rsg rsi rsr rss rst rta rtb rtc rtd rte rtg rti rtr rts rtt saa sab sac sad sae sag sai sar sas sat sba sbb sbc sbd sbe sbg sbi sbr sbs sbt sca scb scc scd sce scg sci scr scs sct sda sdb sdc sdd sde sdg sdi sdr sds sdt se- sea seb sec sed see seg sei ser ses set sga sgb sgc sgd sge sgg sgi sgr sgs sgt sia sib sic sid sie sig sii sir sis sit sr- sra srb src srd sre srg sri srr srs srt ss- ssa ssb ssc ssd sse ssg ssi ssr sss sst sta stb stc std ste stg sti str sts stt taa tab tac tad tae tag tai tar tas tat tba tbb tbc tbd tbe tbg tbi tbr tbs tbt tca tcb tcc tcd tce tcg tci tcr tcs tct tda tdb tdc tdd tde tdg tdi tdr tds tdt te- tea teb tec ted tee teg tei ter tes tet tga tgb tgc tge tgg tgi tgr tgs tgt tia tib tic tid tie tig tii tir tis tit tra trb trc