-er -th a-a a-c a-t aaa aac aad aae aag aah aar aat ac- aca acc acd ace acg ach acr act ad- ada adc add ade adg adh adr adt aea aec aed aee aeg aeh aer aet ag- aga agc agd age agg agh agr agt aha ahc ahd ahe ahg ahh ahr aht ar- ara arc ard are arg arh arr art at- ata atc atd ate atg ath atr att c-- caa cac cad cae cag cah car cat cca ccc ccd cce ccg cch ccr cct cda cdc cdd cde cdg cdh cdr cdt ce- cea cec ced cee ceg ceh cer cet cga cgc cgd cge cgg cgh cgr cgt ch- cha chc chd che chg chh chr cht cra crc crd cre crg crh crr crt cta ctc ctd cte ctg cth ctr ctt daa dac dad dae dag dah dar dat dca dcc dcd dce dcg dcr dct dda ddc ddd dde ddg ddh ddr ddt de- dea dec ded dee deg deh der det dga dgc dgd dge dgg dgh dgr dgt dh- dha dhc dhd dhe dhh dhr dht dra drc drd dre drg drr drt dta dtc dtd dte dtg dth dtr dtt eaa eac ead eae eag eah ear eat ec- eca ecc ecd ece ecg ech ecr ect ed- eda edc edd ede edg edh edr edt eea eec eed eee eeg eer eet ega egc egd ege egg egh egr egt eha ehc ehd ehe ehg ehh ehr eht era erc erd ere erg erh err ert eta etc etd ete etg eth etr ett g-d gaa gac gad gae gag gah gar gat gca gcc gcd gce gcg gch gcr gct gda gdc gdd gde gdh gdr gdt ge- gea gec ged gee geg geh ger get gga ggc ggd ggg ggh ggr ggt gha ghc ghd ghe ghg ghh ghr ght gra grc grd gre grg grh grr grt gta gtc gtd gte gtg gth gtr gtt haa hac had hae hag hah har hat hca hcc hcd hce hcg hch hcr hct hda hdc hdd hde hdg hdh hdr hdt he- hea hec hed hee heg heh her het hga hgc hge hgg hgh hgr hgt hha hhc hhd hhe hhg hhh hhr hht hr- hra hrc hrd hre hrg hrh hrr hrt hta htc htd hte htg hth htr htt ra- raa rac rad rae rag rah rar rat rca rcc rcd rce rcg rch rcr rct rda rdc rdd rde rdg rdh rdr rdt re- rea rec red ree reg reh rer ret rga rgc rgd rge rgg rgh rgr rgt rh- rha rhc rhd rhe rhg rhh rhr rht rra rrc rrd rrg rrh rrr rrt rta rtc rtd rte rtg rtr rtt taa tac tad tae tag tah tar tat tca tcc tcd tce tcg tch tcr tct tda tdc tdd tde tdg tdh tdr tdt te- tea tec ted tee teg teh ter tet tga tgc tge tgg tgh tgr tgt th- tha thc thd the thg thh thr tht tra trc trd tre trg trh trr trt tta ttc ttd tte ttg tth ttr ttt