-er -th a-a a-c a-t aaa aac aae aag aah aan aar aas aat ac- aca acc ace acg ach acn acr acs act aea aec aee aeg aeh aen aer aes aet ag- aga agc age agg agh agn agr ags agt aha ahc ahe ahg ahh ahn ahr ahs aht an- ana anc ane ang anh ann anr ans ant ar- ara arc are arg arh arn arr ars art as- asa asc ase asg ash asn asr ass ast at- ata atc ate atg ath atn atr ats att c-- caa cac cae cag cah can car cas cat cca ccc cce ccg cch ccn ccr ccs cct ce- cea cec cee ceg ceh cen cer ces cet cga cgc cge cgg cgh cgn cgr cgs cgt ch- cha chc che chg chh chn chr chs cht cn- cna cnc cne cng cnh cnn cnr cns cnt cra crc cre crg crh crn crr crs crt csa csc cse csg csh csn csr css cst cta ctc cte ctg cth ctn ctr cts ctt eaa eac eae eag eah ean ear eas eat ec- eca ecc ece ecg ech ecn ecr ecs ect eea eec eee eeg een eer ees eet ega egc ege egg egh egn egr egs egt eha ehc ehe ehg ehh ehn ehr ehs eht en- ena enc ene eng enh enn enr ens ent era erc ere erg erh ern err ers ert es- esa esc ese esg esh esn esr ess est eta etc ete etg eth etn etr ets ett gaa gac gae gag gah gan gar gas gat gca gcc gce gcg gch gcn gcr gcs gct ge- gea gec gee geg geh gen ger ges get gga ggc ggg ggh ggn ggr ggs ggt gha ghc ghe ghg ghh ghn ghr ghs ght gna gnc gne gnn gnr gns gnt gra grc gre grg grh grn grr grs grt gsa gsc gse gsg gsn gsr gss gst gta gtc gte gtg gth gtn gtr gts gtt haa hac hae hag hah han har has hat hca hcc hce hcg hch hcn hcr hcs hct he- hea hec hee heg heh hen her hes het hga hgc hge hgg hgh hgn hgr hgs hgt hha hhc hhe hhg hhh hhn hhr hhs hht hna hnc hne hng hnh hnn hns hnt hr- hra hrc hre hrg hrh hrn hrr hrs hrt hsa hsc hse hsg hsh hsn hsr hss hst hta htc hte htg hth htn htr hts htt naa nac nae nag nah nan nar nas nat nca ncc nce ncg nch ncn ncr ncs nct ne- nea nec nee neg neh nen ner nes net nga ngc nge ngg ngh ngn ngs ngt nha nhc nhe nhg nhh nhn nhr nhs nht nna nnc nne nng nnh nnn nns nnt nra nrc nre nrg nrn nrr nrs nrt nsa nsc nse nsg nsh nsn nsr nss nst nta ntc nte ntg nth ntn ntr nts ntt ra- raa rac rae rag rah ran rar ras rat rca rcc rce rcg rch rcn rcr rcs rct re- rea rec ree reg reh ren rer res ret rga rgc rge rgg rgh rgn rgr rgs rgt rh- rha rhc rhe rhg rhh rhn rhr rhs rht rna rnc rng rnh rnn rnr rns rnt rra rrc rrg rrh rrn rrr rrs rrt rsa rsc rse rsg rsh rsn rsr rss rst rta rtc rte rtg rtn rtr rts rtt saa sac sae sag sah san sar sas sat sca scc sce scg sch scn scr scs sct se- sea sec see seg seh sen ser ses set sga sgc sge sgg sgh sgn sgr sgs sgt sh- sha shc she shg shh shn shr shs sht sna snc sne sng snn snr sns snt sr- sra src sre srg srh srn srr srs srt ss- ssa ssc sse ssg ssh ssn ssr sss sst sta stc ste stg sth stn str sts stt taa tac tae tag tah tan tar tas tat tca tcc tce tcg tch tcn tcr tcs tct te- tea tec tee teg teh ten ter tes tet tga tgc tge tgg tgh tgn tgr tgs tgt th- tha thc the thg thh thn thr ths tht tna tnc tne tng tnh tnn tnr tns tnt tra trc tre trg trh trn trr trs trt tsa tsc tse tsg tsh tsn tsr tss tst tta ttc tte ttg tth ttn ttr tts ttt