-er a-a a-c a-t aaa aac aae aag aak aar aat ac- aca acc ace acg ack acr act aea aec aee aeg aek aer aet ag- aga agc age agg agk agr agt aka akc ake akg akk akr ar- ara arc are arg ark arr art at- ata atc ate atg atr att c-- caa cac cae cag cak car cat cca ccc cce ccg cck ccr cct ce- cea cec cee ceg cek cer cet cga cgc cge cgg cgr cgt cka ckc ckt cra crc cre crg crk crr crt cta ctc cte ctg ctk ctr ctt eaa eac eae eag eak ear eat ec- eca ecc ece ecg eck ecr ect eea eec eee eeg eek eer eet ega egc ege egg egr egt eka ekc eke ekg ekr ekt era erc ere erg erk err ert eta etc ete etg etk etr ett gaa gac gae gag gak gar gat gca gcc gce gcg gck gcr gct ge- gea gec gee geg gek ger get gga ggc ggg ggr ggt gka gkt gra grc gre grg grk grr grt gta gtc gte gtg gtk gtr gtt k-t ka- kaa kac kae kag kak kar kat kca kcc kce kcg kck kcr kct ke- kea kec kee keg kek ker ket kga kgc kkc kke kkk kkr kkt kra krc krg krk krr krt kta ktc kte ktg ktk ktr ktt ra- raa rac rae rag rak rar rat rca rcc rce rcg rcr rct re- rea rec ree reg rek rer ret rga rgc rge rgg rgk rgr rgt rkc rke rkg rkk rkt rra rrc rrg rrk rrr rrt rta rtc rte rtg rtk rtr rtt taa tac tae tag tak tar tat tca tcc tce tcg tck tcr tct te- tea tec tee teg tek ter tet tga tgc tge tgg tgk tgr tgt tka tkc tke tkg tkk tkr tkt tra trc tre trg trk trr trt tta ttc tte ttg ttk ttr ttt