-er a-a a-c a-t aaa aac aad aae aan aao aar aat ac- aca acc acd ace acn aco acr act ad- ada adc add ade adn ado adr adt aea aec aed aee aen aeo aer aet an- ana anc and ane ann ano anr ant aoa aoc aod aoe aon aoo aor aot ar- ara arc ard are arn aro arr art at- ata atc atd ate atn ato atr att c-- caa cac cad cae can cao car cat cca ccc ccd cce ccn cco ccr cct cda cdc cdd cde cdn cdo cdr cdt ce- cea cec ced cee cen ceo cer cet cn- cna cnc cnd cne cnn cno cnr cnt co- coa coc cod coe con coo cor cot cra crc crd cre crn cro crr crt cta ctc ctd cte ctn cto ctr ctt daa dac dad dae dan dao dar dat dca dcc dcd dce dcn dco dcr dct dda ddc ddd dde ddn ddo ddr ddt de- dea dec ded dee den deo der det dna dnc dnd dne dnn dno dnr dnt doa doc dod doe don doo dor dot dra drc drd dre drn dro drr drt dta dtc dtd dte dtn dto dtr dtt eaa eac ead eae ean eao ear eat ec- eca ecc ecd ece ecn eco ecr ect ed- eda edc edd ede edn edo edr edt eea eec eed eee een eeo eer eet en- ena enc end ene enn eno enr ent eo- eoa eoc eod eoe eon eoo eor eot era erc erd ere ern ero err ert eta etc etd ete etn eto etr ett naa nac nad nae nan nao nar nat nca ncc ncd nce ncn nco ncr nct nda ndc ndd nde ndn ndo ndr ndt ne- nea nec ned nee nen neo ner net nna nnc nne nnn nno nnt no- noa noc nod noe non noo nor not nra nrc nrd nre nrn nro nrr nrt nta ntc ntd nte ntn nto ntr ntt oaa oac oad oae oan oao oar oat oc- oca occ ocd ocn oco ocr oct oda odc odd ode odn odo odr odt oea oec oed oee oen oeo oer oet on- ona onc ond one onn ono onr ont oo- ooa ooc ood oon ooo oor oot or- ora orc ord ore orn oro orr ort ot- ota otc otd ote otn oto otr ott ra- raa rac rad rae ran rao rar rat rca rcc rcd rce rcn rco rcr rct rda rdc rdd rde rdn rdo rdr rdt re- rea rec red ree ren reo rer ret rna rnc rnd rnn rno rnr rnt roa roc rod roe ron roo ror rot rra rrc rrd rrn rrr rrt rta rtc rtd rte rtn rto rtr rtt taa tac tad tae tan tao tar tat tca tcc tcd tce tcn tco tcr tct tda tdc tdd tde tdn tdo tdr tdt te- tea tec ted tee ten teo ter tet tna tnc tnd tne tnn tno tnr tnt to- toa toc tod toe ton too tor tot tra trc trd tre trn tro trr trt tta ttc ttd tte ttn tto ttr ttt