-er a-a a-c a-t aaa aac aae aag aak aam aan aar aat ac- aca acc ace acg ack acm acn acr act aea aec aee aeg aek aem aen aer aet ag- aga agc age agg agk agm agn agr agt aka akc ake akg akk akm akn akr ama amc ame amg amk amm amn amr amt an- ana anc ane ang ank anm ann anr ant ar- ara arc are arg ark arm arn arr art at- ata atc ate atg atm atn atr att c-- caa cac cae cag cak cam can car cat cca ccc cce ccg cck ccm ccn ccr cct ce- cea cec cee ceg cek cem cen cer cet cga cgc cge cgg cgm cgn cgr cgt cka ckc ckm ckt cma cmc cme cmg cmk cmm cmn cmr cmt cn- cna cnc cne cng cnm cnn cnr cnt cra crc cre crg crk crm crn crr crt cta ctc cte ctg ctk ctm ctn ctr ctt eaa eac eae eag eak eam ean ear eat ec- eca ecc ece ecg eck ecm ecn ecr ect eea eec eee eeg eek eem een eer eet ega egc ege egg egm egn egr egt eka ekc eke ekg ekr ekt em- ema emc eme emg emk emm emn emr emt en- ena enc ene eng enk enm enn enr ent era erc ere erg erk erm ern err ert eta etc ete etg etk etm etn etr ett gaa gac gae gag gak gam gan gar gat gca gcc gce gcg gck gcm gcn gcr gct ge- gea gec gee geg gek gem gen ger get gga ggc ggg ggm ggn ggr ggt gka gkm gkn gkt gma gmc gme gmg gmm gmn gmr gmt gna gnc gne gnm gnn gnr gnt gra grc gre grg grk grm grn grr grt gta gtc gte gtg gtk gtm gtn gtr gtt k-t ka- kaa kac kae kag kak kam kan kar kat kca kcc kce kcg kck kcm kcn kcr kct ke- kea kec kee keg kek kem ken ker ket kga kgc kgm kkc kke kkk kkm kkn kkr kkt kma kmc kme kmg kmk kmm kmt kn- kna knc kne kng knk knm knn knr knt kra krc krg krk krn krr krt kta ktc kte ktg ktk ktm ktn ktr ktt m-r maa mac mae mag mak mam man mar mat mc- mca mcc mce mcg mck mcm mcn mcr mct mea mec mee meg mek mem men mer met mga mgc mge mgk mgm mgn mgr mgt mka mkc mke mkg mkk mkm mkn mkr mkt mma mmc mme mmg mmk mmm mmn mmr mmt mna mnc mne mng mnk mnm mnn mnr mnt mra mrc mre mrg mrk mrm mrn mrr mrt mta mtc mte mtg mtk mtm mtn mtr mtt naa nac nae nag nak nam nan nar nat nca ncc nce ncg nck ncm ncn ncr nct ne- nea nec nee neg nek nem nen ner net nga ngc nge ngg ngk ngm ngn ngt nka nkc nke nkk nkm nkn nkr nkt nma nmc nme nmg nmk nmm nmn nmr nmt nna nnc nne nng nnk nnm nnn nnt nra nrc nre nrg nrk nrm nrn nrr nrt nta ntc nte ntg ntk ntm ntn ntr ntt ra- raa rac rae rag rak ram ran rar rat rca rcc rce rcg rcm rcn rcr rct re- rea rec ree reg rek rem ren rer ret rga rgc rge rgg rgk rgn rgr rgt rkc rke rkg rkk rkm rkt rma rmc rme rmg rmm rmn rmr rmt rna rnc rng rnm rnn rnr rnt rra rrc rrg rrk rrm rrn rrr rrt rta rtc rte rtg rtk rtm rtn rtr rtt taa tac tae tag tak tam tan tar tat tca tcc tce tcg tck tcm tcn tcr tct te- tea tec tee teg tek tem ten ter tet tga tgc tge tgg tgk tgm tgn tgr tgt tka tkc tke tkg tkk tkm tkr tkt tma tmc tme tmg tmk tmm tmn tmr tmt tna tnc tne tng tnk tnm tnn tnr tnt tra trc tre trg trk trm trn trr trt tta ttc tte ttg ttk ttm ttn ttr ttt