-er -th a-a a-c a-t aaa aac aae aaf aag aah aar aat ac- aca acc ace acf acg ach acr act aea aec aee aef aeg aeh aer aet af- afa afc afe aff afg afh afr aft ag- aga agc age agf agg agh agr agt aha ahc ahe ahf ahg ahh ahr aht ar- ara arc are arf arg arh arr art at- ata atc ate atf atg ath atr att c-- caa cac cae caf cag cah car cat cca ccc cce ccf ccg cch ccr cct ce- cea cec cee cef ceg ceh cer cet cfa cfc cfe cff cfg cfh cfr cft cga cgc cge cgg cgh cgr cgt ch- cha chc che chf chg chh chr cht cra crc cre crf crg crh crr crt cta ctc cte ctf ctg cth ctr ctt eaa eac eae eaf eag eah ear eat ec- eca ecc ece ecf ecg ech ecr ect eea eec eee eef eeg eer eet ef- efa efc efe eff efg efh efr eft ega egc ege egf egg egh egr egt eha ehc ehe ehf ehg ehh ehr eht era erc ere erf erg erh err ert eta etc ete etf etg eth etr ett faa fac fae faf fag fah far fat fca fcc fce fcf fcg fcr fct fea fec fee fef feg feh fer fet ffa ffc ffe fff ffg ffh ffr fft fga fgc fge fgf fgg fgh fgr fgt fha fhc fhe fhf fhg fhh fhr fra frc fre frf frg frh frr frt fta ftc fte ftf ftg fth ftr ftt gaa gac gae gaf gag gah gar gat gca gcc gce gcf gcg gch gcr gct ge- gea gec gee gef geg geh ger get gfa gfc gfe gff gfh gfr gft gga ggc ggg ggh ggr ggt gha ghc ghe ghg ghh ghr ght gra grc gre grf grg grh grr grt gta gtc gte gtf gtg gth gtr gtt haa hac hae haf hag hah har hat hca hcc hce hcf hcg hch hcr hct he- hea hec hee hef heg heh her het hfa hfc hfe hff hfg hfh hfr hft hga hgc hge hgf hgg hgh hgr hgt hha hhc hhe hhf hhg hhh hhr hht hr- hra hrc hre hrf hrg hrh hrr hrt hta htc hte htf htg hth htr htt ra- raa rac rae raf rag rah rar rat rca rcc rce rcf rcg rch rcr rct re- rea rec ree ref reg reh rer ret rfa rfc rfe rff rfg rfh rfr rft rga rgc rge rgf rgg rgh rgr rgt rh- rha rhc rhe rhf rhg rhh rhr rht rra rrc rrf rrg rrh rrr rrt rta rtc rte rtf rtg rtr rtt taa tac tae taf tag tah tar tat tca tcc tce tcf tcg tch tcr tct te- tea tec tee tef teg teh ter tet tfa tfc tfe tff tfg tfh tfr tft tga tgc tge tgf tgg tgh tgr tgt th- tha thc the thf thg thh thr tht tra trc tre trf trg trh trr trt tta ttc tte ttf ttg tth ttr ttt