-er -ic a-a a-c a-i a-t aaa aac aad aae aaf aag aai aao aar aat ac- aca acc acd ace acf acg aci aco acr act ad- ada adc add ade adf adg adi ado adr adt aea aec aed aee aef aeg aei aeo aer aet af- afa afc afd afe aff afg afi afo afr aft ag- aga agc agd age agf agg agi ago agr agt ai- aia aic aid aie aif aig aii aio air ait aoa aoc aod aoe aof aog aoi aoo aor aot ar- ara arc ard are arf arg ari aro arr art at- ata atc atd ate atf atg ati ato atr att c-- caa cac cad cae caf cag cai cao car cat cca ccc ccd cce ccf ccg cci cco ccr cct cda cdc cdd cde cdf cdg cdi cdo cdr cdt ce- cea cec ced cee cef ceg cei ceo cer cet cfa cfc cfd cfe cff cfg cfi cfo cfr cft cga cgc cgd cge cgg cgi cgo cgr cgt ci- cia cic cid cie cif cig cii cio cir cit co- coa coc cod coe cof cog coi coo cor cot cra crc crd cre crf crg cri cro crr crt cta ctc ctd cte ctf ctg cti cto ctr ctt daa dac dad dae daf dag dai dao dar dat dca dcc dcd dce dcf dcg dci dco dcr dct dda ddc ddd dde ddf ddg ddi ddo ddr ddt de- dea dec ded dee def deg dei deo der det dfa dfc dfd dfe dff dfg dfi dfo dfr dft dga dgc dgd dge dgf dgg dgi dgr dgt di- dia dic did die dif dig dii dio dir dit doa doc dod doe dof dog doi doo dor dot dra drc drd dre drg dri dro drr drt dta dtc dtd dte dtf dtg dti dto dtr dtt eaa eac ead eae eaf eag eai eao ear eat ec- eca ecc ecd ece ecf ecg eci eco ecr ect ed- eda edc edd ede edf edg edi edo edr edt eea eec eed eee eef eeg eeo eer eet ef- efa efc efd efe eff efg efi efo efr eft ega egc egd ege egf egg egi ego egr egt eia eic eid eie eif eig eii eio eir eit eo- eoa eoc eod eoe eof eog eoi eoo eor eot era erc erd ere erf erg eri ero err ert eta etc etd ete etf etg eti eto etr ett faa fac fad fae faf fag fai fao far fat fca fcc fcd fce fcf fcg fci fco fcr fct fda fdc fdd fde fdf fdg fdi fdo fdr fdt fea fec fed fee fef feg fei feo fer fet ffa ffc ffd ffe fff ffg ffi ffo ffr fft fga fgc fgd fge fgf fgg fgi fgr fgt fia fic fid fie fif fig fii fir fit foa foc foe fof fog foi foo for fot fra frc frd fre frf frg fri fro frr frt fta ftc ftd fte ftf ftg fti fto ftr ftt g-d gaa gac gad gae gaf gag gai gao gar gat gca gcc gcd gce gcf gcg gci gco gcr gct gda gdc gdd gde gdf gdi gdo gdr gdt ge- gea gec ged gee gef geg gei geo ger get gfa gfc gfd gfe gff gfi gfo gfr gft gga ggc ggd ggg ggi ggo ggr ggt gia gic gid gie gif gig gii gio gir git goa goc god goe gof gog goi goo gor got gra grc grd gre grf grg gri gro grr grt gta gtc gtd gte gtf gtg gti gto gtr gtt i-d i-f ia- iaa iac iad iae iaf iag iai iao iar iat ica icc icd ice icf icg ici ico icr ict ida idc idd ide idf idg idi ido idr idt ie- iea iec ied iee ief ieg iei ier iet ifa ifc ifd ife iff ifg ifi ifo ifr ift iga igc igd ige igf igg igi igo igr igt iia iic iid iie iif iii iio iir iit io- ioa ioc iod ioe iof iog ioi ioo ior iot ir- ira irc ird ire irf irg iri iro irr irt ita itc itd ite itf itg iti ito itt o-i oaa oac oad oae oaf oag oai oao oar oat oc- oca occ ocd ocf ocg oci oco ocr oct oda odc odd ode odf odg odi odo odr odt oea oec oed oee oef oeg oei oeo oer oet of- ofa ofc ofd ofe off ofg ofi ofo ofr oft oga ogc ogd oge ogf ogg ogi ogo ogt oia oic oid oie oif oii oio oir oit oo- ooa ooc ood oof oog ooi ooo oor oot or- ora orc ord ore orf org ori oro orr ort ot- ota otc otd ote otf otg oti oto otr ott ra- raa rac rad rae raf rag rai rao rar rat rca rcc rcd rce rcf rcg rci rco rcr rct rda rdc rdd rde rdf rdg rdi rdo rdr rdt re- rea rec red ree ref reg rei reo rer ret rfa rfc rfd rfe rff rfg rfi rfo rfr rft rga rgc rgd rge rgf rgg rgi rgo rgr rgt ria ric rid rie rif rig rii rio rir rit roa roc rod roe rof rog roi roo ror rot rra rrc rrd rrf rrg rri rrr rrt rta rtc rtd rte rtf rtg rti rto rtr rtt taa tac tad tae taf tag tai tao tar tat tca tcc tcd tce tcf tcg tci tco tcr tct tda tdc tdd tde tdf tdg tdi tdo tdr tdt te- tea tec ted tee tef teg tei teo ter tet tfa tfc tfd tfe tff tfg tfi tfo tfr tft tga tgc tge tgf tgg tgi tgo tgr tgt tia tic tid tie tif tig tii tio tir tit to- toa toc tod toe tof tog toi too tor tot