-er -ic a-a a-c a-i a-t aaa aac aad aae aag aai aao aar aat ac- aca acc acd ace acg aci aco acr act ad- ada adc add ade adg adi ado adr adt aea aec aed aee aeg aei aeo aer aet ag- aga agc agd age agg agi ago agr agt ai- aia aic aid aie aig aii aio air ait aoa aoc aod aoe aog aoi aoo aor aot ar- ara arc ard are arg ari aro arr art at- ata atc atd ate atg ati ato atr att c-- caa cac cad cae cag cai cao car cat cca ccc ccd cce ccg cci cco ccr cct cda cdc cdd cde cdg cdi cdo cdr cdt ce- cea cec ced cee ceg cei ceo cer cet cga cgc cgd cge cgg cgi cgo cgr cgt ci- cia cic cid cie cig cii cio cir cit co- coa coc cod coe cog coi coo cor cot cra crc crd cre crg cri cro crr crt cta ctc ctd cte ctg cti cto ctr ctt daa dac dad dae dag dai dao dar dat dca dcc dcd dce dcg dci dco dcr dct dda ddc ddd dde ddg ddi ddo ddr ddt de- dea dec ded dee deg dei deo der det dga dgc dgd dge dgg dgi dgr dgt di- dia dic did die dig dii dio dir dit doa doc dod doe dog doi doo dor dot dra drc drd dre drg dri dro drr drt dta dtc dtd dte dtg dti dto dtr dtt eaa eac ead eae eag eai eao ear eat ec- eca ecc ecd ece ecg eci eco ecr ect ed- eda edc edd ede edg edi edo edr edt eea eec eed eee eeg eeo eer eet ega egc egd ege egg egi ego egr egt eia eic eid eie eig eii eio eir eit eo- eoa eoc eod eoe eog eoi eoo eor eot era erc erd ere erg eri ero err ert eta etc etd ete etg eti eto etr ett g-d gaa gac gad gae gag gai gao gar gat gca gcc gcd gce gcg gci gco gcr gct gda gdc gdd gde gdi gdo gdr gdt ge- gea gec ged gee geg gei geo ger get gga ggc ggd ggg ggi ggo ggr ggt gia gic gid gie gig gii gio gir git goa goc god goe gog goi goo gor got gra grc grd gre grg gri gro grr grt gta gtc gtd gte gtg gti gto gtr gtt i-d ia- iaa iac iad iae iag iai iao iar iat ica icc icd ice icg ici ico icr ict ida idc idd ide idg idi ido idr idt ie- iea iec ied iee ieg iei ier iet iga igc igd ige igg igi igo igr igt iia iic iid iie iii iio iir iit io- ioa ioc iod ioe iog ioi ioo ior iot ir- ira irc ird ire irg iri iro irr irt ita itc itd ite itg iti ito itt o-i oaa oac oad oae oag oai oao oar oat oc- oca occ ocd ocg oci oco ocr oct oda odc odd ode odg odi odo odr odt oea oec oed oee oeg oei oeo oer oet oga ogc ogd oge ogg ogi ogo ogt oia oic oid oie oii oio oir oit oo- ooa ooc ood oog ooi ooo oor oot or- ora orc ord ore org ori oro orr ort ot- ota otc otd ote otg oti oto otr ott ra- raa rac rad rae rag rai rao rar rat rca rcc rcd rce rcg rci rco rcr rct rda rdc rdd rde rdg rdi rdo rdr rdt re- rea rec red ree reg rei reo rer ret rga rgc rgd rge rgg rgi rgo rgr rgt ria ric rid rie rig rii rio rir rit roa roc rod roe rog roi roo ror rot rra rrc rrd rrg rri rrr rrt rta rtc rtd rte rtg rti rto rtr rtt taa tac tad tae tag tai tao tar tat tca tcc tcd tce tcg tci tco tcr tct tda tdc tdd tde tdg tdi tdo tdr tdt te- tea tec ted tee teg tei teo ter tet tga tgc tge tgg tgi tgo tgr tgt tia tic tid tie tig tii tio tir tit to- toa toc tod toe tog toi too tor tot tra trc trd tre trg tri tro trr trt tta ttc ttd tte ttg tti tto ttr ttt