-er -th a-a a-c a-t aaa aac aae aag aah aak aar aat ac- aca acc ace acg ach ack acr act aea aec aee aeg aeh aek aer aet ag- aga agc age agg agh agk agr agt aha ahc ahe ahg ahh ahk ahr aht aka akc ake akg akh akk akr ar- ara arc are arg arh ark arr art at- ata atc ate atg ath atr att c-- caa cac cae cag cah cak car cat cca ccc cce ccg cch cck ccr cct ce- cea cec cee ceg ceh cek cer cet cga cgc cge cgg cgh cgr cgt ch- cha chc che chg chh chk chr cht cka ckc ckh ckt cra crc cre crg crh crk crr crt cta ctc cte ctg cth ctk ctr ctt eaa eac eae eag eah eak ear eat ec- eca ecc ece ecg ech eck ecr ect eea eec eee eeg eek eer eet ega egc ege egg egh egr egt eha ehc ehe ehg ehh ehr eht eka ekc eke ekg ekh ekr ekt era erc ere erg erh erk err ert eta etc ete etg eth etk etr ett gaa gac gae gag gah gak gar gat gca gcc gce gcg gch gck gcr gct ge- gea gec gee geg geh gek ger get gga ggc ggg ggh ggr ggt gha ghc ghe ghg ghh ghr ght gka gkh gkt gra grc gre grg grh grk grr grt gta gtc gte gtg gth gtk gtr gtt haa hac hae hag hah hak har hat hca hcc hce hcg hch hck hcr hct he- hea hec hee heg heh hek her het hga hgc hge hgg hgh hgk hgr hgt hha hhc hhe hhg hhh hhk hhr hht hka hkg hkh hkk hkr hkt hr- hra hrc hre hrg hrh hrk hrr hrt hta htc hte htg hth htk htr htt k-t ka- kaa kac kae kag kah kak kar kat kca kcc kce kcg kch kck kcr kct ke- kea kec kee keg keh kek ker ket kga kgc kgh kha khe khh khk khr kkc kke kkh kkk kkr kkt kra krc krg krk krr krt kta ktc kte ktg kth ktk ktr ktt ra- raa rac rae rag rah rak rar rat rca rcc rce rcg rch rcr rct re- rea rec ree reg reh rek rer ret rga rgc rge rgg rgh rgk rgr rgt rh- rha rhc rhe rhg rhh rhr rht rkc rke rkg rkk rkt rra rrc rrg rrh rrk rrr rrt rta rtc rte rtg rtk rtr rtt taa tac tae tag tah tak tar tat tca tcc tce tcg tch tck tcr tct te- tea tec tee teg teh tek ter tet tga tgc tge tgg tgh tgk tgr tgt th- tha thc the thg thh thk thr tht tka tkc tke tkg tkk tkr tkt tra trc tre trg trh trk trr trt tta ttc tte ttg tth ttk ttr ttt