-er a-a a-c a-t aaa aac aad aae aaf aan aao aar aat ac- aca acc acd ace acf acn aco acr act ad- ada adc add ade adf adn ado adr adt aea aec aed aee aef aen aeo aer aet af- afa afc afd afe aff afn afo afr aft an- ana anc and ane anf ann ano anr ant aoa aoc aod aoe aof aon aoo aor aot ar- ara arc ard are arf arn aro arr art at- ata atc atd ate atf atn ato atr att c-- caa cac cad cae caf can cao car cat cca ccc ccd cce ccf ccn cco ccr cct cda cdc cdd cde cdf cdn cdo cdr cdt ce- cea cec ced cee cef cen ceo cer cet cfa cfc cfd cfe cff cfn cfo cfr cft cn- cna cnc cnd cne cnf cnn cno cnr cnt co- coa coc cod coe cof con coo cor cot cra crc crd cre crf crn cro crr crt cta ctc ctd cte ctf ctn cto ctr ctt daa dac dad dae daf dan dao dar dat dca dcc dcd dce dcf dcn dco dcr dct dda ddc ddd dde ddf ddn ddo ddr ddt de- dea dec ded dee def den deo der det dfa dfc dfd dfe dff dfn dfo dfr dft dna dnc dnd dne dnf dnn dno dnr dnt doa doc dod doe dof don doo dor dot dra drc drd dre drn dro drr drt dta dtc dtd dte dtf dtn dto dtr dtt eaa eac ead eae eaf ean eao ear eat ec- eca ecc ecd ece ecf ecn eco ecr ect ed- eda edc edd ede edf edn edo edr edt eea eec eed eee eef een eeo eer eet ef- efa efc efd efe eff efo efr eft en- ena enc end ene enf enn eno enr ent eo- eoa eoc eod eoe eof eon eoo eor eot era erc erd ere erf ern ero err ert eta etc etd ete etf etn eto etr ett faa fac fad fae faf fan fao far fat fca fcc fcd fce fcf fcn fco fcr fct fda fdc fdd fde fdf fdn fdo fdr fdt fea fec fed fee fef fen feo fer fet ffa ffc ffd ffe fff ffn ffo ffr fft fna fnc fnd fne fnf fnn fnr fnt foa foc foe fof fon foo for fot fra frc frd fre frf frn fro frr frt fta ftc ftd fte ftf ftn fto ftr ftt naa nac nad nae naf nan nao nar nat nca ncc ncd nce ncf ncn nco ncr nct nda ndc ndd nde ndf ndn ndo ndr ndt ne- nea nec ned nee nef nen neo ner net nfa nfc nfd nfe nff nfn nfo nfr nft nna nnc nne nnf nnn nno nnt no- noa noc nod noe nof non noo nor not nra nrc nrd nre nrf nrn nro nrr nrt nta ntc ntd nte ntf ntn nto ntr ntt oaa oac oad oae oaf oan oao oar oat oc- oca occ ocd ocf ocn oco ocr oct oda odc odd ode odf odn odo odr odt oea oec oed oee oef oen oeo oer oet of- ofa ofc ofd ofe off ofn ofo ofr oft on- ona onc ond one onf onn ono onr ont oo- ooa ooc ood oof oon ooo oor oot or- ora orc ord ore orf orn oro orr ort ot- ota otc otd ote otf otn oto otr ott ra- raa rac rad rae raf ran rao rar rat rca rcc rcd rce rcf rcn rco rcr rct rda rdc rdd rde rdf rdn rdo rdr rdt re- rea rec red ree ref ren reo rer ret rfa rfc rfd rfe rff rfn rfo rfr rft rna rnc rnd rnn rno rnr rnt roa roc rod roe rof ron roo ror rot rra rrc rrd rrf rrn rrr rrt rta rtc rtd rte rtf rtn rto rtr rtt taa tac tad tae taf tan tao tar tat tca tcc tcd tce tcf tcn tco tcr tct tda tdc tdd tde tdf tdn tdo tdr tdt te- tea tec ted tee tef ten teo ter tet tfa tfc tfd tfe tff tfn tfo tfr tft tna tnc tnd tne tnf tnn tno tnr tnt to- toa toc tod toe tof ton too tor tot tra trc trd tre trf trn tro trr trt tta ttc ttd tte ttf ttn tto ttr ttt