-er -ic a-a a-c a-i a-t aaa aac aad aae aag aai aao aar aas aat ac- aca acc acd ace acg aci aco acr acs act ad- ada adc add ade adg adi ado adr ads adt aea aec aed aee aeg aei aeo aer aes aet ag- aga agc agd age agg agi ago agr ags agt ai- aia aic aid aie aig aii aio air ais ait aoa aoc aod aoe aog aoi aoo aor aos aot ar- ara arc ard are arg ari aro arr ars art as- asa asc asd ase asg asi aso asr ass ast at- ata atc atd ate atg ati ato atr ats att c-- caa cac cad cae cag cai cao car cas cat cca ccc ccd cce ccg cci cco ccr ccs cct cda cdc cdd cde cdg cdi cdo cdr cds cdt ce- cea cec ced cee ceg cei ceo cer ces cet cga cgc cgd cge cgg cgi cgo cgr cgs cgt ci- cia cic cid cie cig cii cio cir cis cit co- coa coc cod coe cog coi coo cor cos cot cra crc crd cre crg cri cro crr crs crt csa csc csd cse csg csi cso csr css cst cta ctc ctd cte ctg cti cto ctr cts ctt daa dac dad dae dag dai dao dar das dat dca dcc dcd dce dcg dci dco dcr dcs dct dda ddc ddd dde ddg ddi ddo ddr dds ddt de- dea dec ded dee deg dei deo der des det dga dgc dgd dge dgg dgi dgr dgs dgt di- dia dic did die dig dii dio dir dis dit doa doc dod doe dog doi doo dor dos dot dra drc drd dre drg dri dro drr drs drt dsa dsc dsd dse dsg dsi dso dsr dss dst dta dtc dtd dte dtg dti dto dtr dts dtt eaa eac ead eae eag eai eao ear eas eat ec- eca ecc ecd ece ecg eci eco ecr ecs ect ed- eda edc edd ede edg edi edo edr eds edt eea eec eed eee eeg eeo eer ees eet ega egc egd ege egg egi ego egr egs egt eia eic eid eie eig eii eio eir eis eit eo- eoa eoc eod eoe eog eoi eoo eor eos eot era erc erd ere erg eri ero err ers ert es- esa esc esd ese esg esi eso esr ess est eta etc etd ete etg eti eto etr ets ett g-d gaa gac gad gae gag gai gao gar gas gat gca gcc gcd gce gcg gci gco gcr gcs gct gda gdc gdd gde gdi gdo gdr gds gdt ge- gea gec ged gee geg gei geo ger ges get gga ggc ggd ggg ggi ggo ggr ggs ggt gia gic gid gie gig gii gio gir gis git goa goc god goe gog goi goo gor gos got gra grc grd gre grg gri gro grr grs grt gsa gsc gsd gse gsg gsi gso gsr gss gst gta gtc gtd gte gtg gti gto gtr gts gtt i-d ia- iaa iac iad iae iag iai iao iar ias iat ica icc icd ice icg ici ico icr ics ict ida idc idd ide idg idi ido idr ids idt ie- iea iec ied iee ieg iei ier ies iet iga igc igd ige igg igi igo igr igs igt iia iic iid iie iii iio iir iis iit io- ioa ioc iod ioe iog ioi ioo ior ios iot ir- ira irc ird ire irg iri iro irr irs irt is- isa isc isd ise isg isi iso isr iss ist ita itc itd ite itg iti ito its itt o-i oaa oac oad oae oag oai oao oar oas oat oc- oca occ ocd ocg oci oco ocr ocs oct oda odc odd ode odg odi odo odr ods odt oea oec oed oee oeg oei oeo oer oes oet oga ogc ogd oge ogg ogi ogo ogs ogt oia oic oid oie oii oio oir ois oit oo- ooa ooc ood oog ooi ooo oor oos oot or- ora orc ord ore org ori oro orr ors ort os- osa osc osd ose osg osi oso osr oss ost ot- ota otc otd ote otg oti oto otr ots ott ra- raa rac rad rae rag rai rao rar ras rat rca rcc rcd rce rcg rci rco rcr rcs rct rda rdc rdd rde rdg rdi rdo rdr rds rdt re- rea rec red ree reg rei reo rer res ret rga rgc rgd rge rgg rgi rgo rgr rgs rgt ria ric rid rie rig rii rio rir ris rit roa roc rod roe rog roi roo ror ros rot rra rrc rrd rrg rri rrr rrs rrt rsa rsc rsd rse rsg rsi rso rsr rss rst rta rtc rtd rte rtg rti rto rtr rts rtt saa sac sad sae sag sai sao sar sas sat sca scc scd sce scg sci sco scr scs sct sda sdc sdd sde sdg sdi sdo sdr sds sdt se- sea sec sed see seg sei seo ser ses set sga sgc sgd sge sgg sgi sgo sgr sgs sgt sia sic sid sie sig sii sio sir sis sit soa soc sod soe sog soi soo sor sos sot sr- sra src srd sre srg sri sro srr srs srt ss- ssa ssc ssd sse ssg ssi sso ssr sss sst sta stc std ste stg sti sto str sts stt taa tac tad tae tag tai tao tar tas tat tca tcc tcd tce tcg tci tco tcr tcs tct tda tdc tdd tde tdg tdi tdo tdr tds tdt te- tea tec ted tee teg tei teo ter tes tet tga tgc tge tgg tgi tgo tgr tgs tgt tia tic tid tie tig tii tio tir tis tit to- toa toc tod toe tog toi too tor tos tot