-er -th a-a a-c a-t aaa aac aae aag aah aao aar aas aat ac- aca acc ace acg ach aco acr acs act aea aec aee aeg aeh aeo aer aes aet ag- aga agc age agg agh ago agr ags agt aha ahc ahe ahg ahh aho ahr ahs aht aoa aoc aoe aog aoh aoo aor aos aot ar- ara arc are arg arh aro arr ars art as- asa asc ase asg ash aso asr ass ast at- ata atc ate atg ath ato atr ats att c-- caa cac cae cag cah cao car cas cat cca ccc cce ccg cch cco ccr ccs cct ce- cea cec cee ceg ceh ceo cer ces cet cga cgc cge cgg cgh cgo cgr cgs cgt ch- cha chc che chg chh cho chr chs cht co- coa coc coe cog coh coo cor cos cot cra crc cre crg crh cro crr crs crt csa csc cse csg csh cso csr css cst cta ctc cte ctg cth cto ctr cts ctt eaa eac eae eag eah eao ear eas eat ec- eca ecc ece ecg ech eco ecr ecs ect eea eec eee eeg eeo eer ees eet ega egc ege egg egh ego egr egs egt eha ehc ehe ehg ehh eho ehr ehs eht eo- eoa eoc eoe eog eoh eoo eor eos eot era erc ere erg erh ero err ers ert es- esa esc ese esg esh eso esr ess est eta etc ete etg eth eto etr ets ett gaa gac gae gag gah gao gar gas gat gca gcc gce gcg gch gco gcr gcs gct ge- gea gec gee geg geh geo ger ges get gga ggc ggg ggh ggo ggr ggs ggt gha ghc ghe ghg ghh gho ghr ghs ght goa goc goe gog goh goo gor gos got gra grc gre grg grh gro grr grs grt gsa gsc gse gsg gso gsr gss gst gta gtc gte gtg gth gto gtr gts gtt haa hac hae hag hah hao har has hat hca hcc hce hcg hch hco hcr hcs hct he- hea hec hee heg heh heo her hes het hga hgc hge hgg hgh hgo hgr hgs hgt hha hhc hhe hhg hhh hho hhr hhs hht hoa hoc hoe hog hoh hoo hor hos hot hr- hra hrc hre hrg hrh hro hrr hrs hrt hsa hsc hse hsg hsh hsr hss hst hta htc hte htg hth hto htr hts htt oaa oac oae oag oah oao oar oas oat oc- oca occ ocg och oco ocr ocs oct oea oec oee oeg oeh oeo oer oes oet oga ogc oge ogg ogh ogo ogs ogt oha ohc ohe ohg ohh oho ohr ohs oht oo- ooa ooc oog ooh ooo oor oos oot or- ora orc ore org orh oro orr ors ort os- osa osc ose osg osh oso osr oss ost ot- ota otc ote otg oth oto otr ots ott ra- raa rac rae rag rah rao rar ras rat rca rcc rce rcg rch rco rcr rcs rct re- rea rec ree reg reh reo rer res ret rga rgc rge rgg rgh rgo rgr rgs rgt rh- rha rhc rhe rhg rhh rho rhr rhs rht roa roc roe rog roh roo ror ros rot rra rrc rrg rrh rrr rrs rrt rsa rsc rse rsg rsh rso rsr rss rst rta rtc rte rtg rto rtr rts rtt saa sac sae sag sah sao sar sas sat sca scc sce scg sch sco scr scs sct se- sea sec see seg seh seo ser ses set sga sgc sge sgg sgh sgo sgr sgs sgt sh- sha shc she shg shh sho shr shs sht soa soc soe sog soh soo sor sos sot sr- sra src sre srg srh sro srr srs srt ss- ssa ssc sse ssg ssh sso ssr sss sst sta stc ste stg sth sto str sts stt taa tac tae tag tah tao tar tas tat tca tcc tce tcg tch tco tcr tcs tct te- tea tec tee teg teh teo ter tes tet tga tgc tge tgg tgh tgo tgr tgs tgt th- tha thc the thg thh tho thr ths tht to- toa toc toe tog toh too tor tos tot tra trc tre trg trh tro trr trs trt tsa tsc tse tsg tsh tso tsr tss tst tta ttc tte ttg tth tto ttr tts ttt