-er a-a a-c a-t aaa aac aad aae aag aak aap aar aas aat ac- aca acc acd ace acg ack acp acr acs act ad- ada adc add ade adg adk adp adr ads adt aea aec aed aee aeg aek aep aer aes aet ag- aga agc agd age agg agk agp agr ags agt aka akc akd ake akg akk akp akr aks ap- apa apc apd ape apg apk app apr aps apt ar- ara arc ard are arg ark arp arr ars art as- asa asc asd ase asg ask asp asr ass ast at- ata atc atd ate atg atp atr ats att c-- caa cac cad cae cag cak cap car cas cat cca ccc ccd cce ccg cck ccp ccr ccs cct cda cdc cdd cde cdg cdk cdp cdr cds cdt ce- cea cec ced cee ceg cek cep cer ces cet cga cgc cgd cge cgg cgp cgr cgs cgt cka ckc ckd cks ckt cpa cpc cpd cpe cpg cpk cpp cpr cps cpt cra crc crd cre crg crk crp crr crs crt csa csc csd cse csg csk csp csr css cst cta ctc ctd cte ctg ctk ctp ctr cts ctt daa dac dad dae dag dak dap dar das dat dca dcc dcd dce dcg dck dcp dcr dcs dct dda ddc ddd dde ddg ddk ddp ddr dds ddt de- dea dec ded dee deg dek dep der des det dga dgc dgd dge dgg dgk dgp dgr dgs dgt dka dkc dke dkg dkk dkp dkr dks dkt dpa dpc dpd dpe dpg dpk dpp dpr dps dpt dra drc drd dre drg drk drp drr drs drt dsa dsc dsd dse dsg dsk dsp dsr dss dst dta dtc dtd dte dtg dtk dtp dtr dts dtt eaa eac ead eae eag eak eap ear eas eat ec- eca ecc ecd ece ecg eck ecr ecs ect ed- eda edc edd ede edg edk edp edr eds edt eea eec eed eee eeg eek eep eer ees eet ega egc egd ege egg egp egr egs egt eka ekc ekd eke ekg ekp ekr eks ekt ep- epa epc epd epe epg epp epr eps ept era erc erd ere erg erk erp err ers ert es- esa esc esd ese esg esk esp esr ess est eta etc etd ete etg etk etp etr ets ett g-d g-p gaa gac gad gae gag gak gap gar gas gat gca gcc gcd gce gcg gck gcp gcr gcs gct gda gdc gdd gde gdk gdp gdr gds gdt ge- gea gec ged gee geg gek gep ger ges get gga ggc ggd ggg ggp ggr ggs ggt gka gkd gkp gks gkt gpa gpc gpd gpe gpg gpk gpp gpr gps gpt gra grc grd gre grg grk grp grr grs grt gsa gsc gsd gse gsg gsk gsp gsr gss gst gta gtc gtd gte gtg gtk gtp gtr gts gtt k-t ka- kaa kac kad kae kag kak kap kar kas kat kca kcc kcd kce kcg kck kcp kcr kcs kct kda kdc kde kdg kdk kdp kdr kds kdt ke- kea kec ked kee keg kek kep ker kes ket kga kgc kgd kgp kgs kkc kke kkk kkp kkr kks kkt kpa kpc kpd kpe kpk kpp kpr kps kpt kra krc krd krg krk krp krr krs krt ksa ksc ksd kse ksg ksk ksp ksr kss kst kta ktc kte ktg ktk ktp ktr kts ktt p-p paa pac pad pae pag pak pap par pas pat pca pcc pcd pce pcg pck pcp pcr pcs pct pda pdc pdd pde pdg pdk pdp pdr pds pdt pea pec ped pee peg pek pep per pes pet pga pgc pgd pge pgg pgk pgp pgr pgs pgt pka pkc pkd pke pkg pkp pkr pks pkt ppa ppc ppd ppe ppg ppk ppp ppr pps ppt pra prc prd pre prg prk prp prr prs prt ps- psa psc psd pse psg psk psp psr pss pst pt- pta ptc ptd pte ptg ptk ptp ptr pts ptt ra- raa rac rad rae rag rak rap rar ras rat rca rcc rcd rce rcg rcp rcr rcs rct rda rdc rdd rde rdg rdp rdr rds rdt re- rea rec red ree reg rek rep rer res ret rga rgc rgd rge rgg rgk rgp rgr rgs rgt rkc rke rkg rkk rkp rks rkt rpa rpc rpd rpe rpg rpk rpp rpr rps rpt rra rrc rrd rrg rrk rrp rrr rrs rrt rsa rsc rsd rse rsg rsk rsp rsr rss rst rta rtc rtd rte rtg rtk rtp rtr rts rtt saa sac sad sae sag sak sap sar sas sat sca scc scd sce scg sck scp scr scs sct sda sdc sdd sde sdg sdk sdp sdr sds sdt se- sea sec sed see seg sek sep ser ses set sga sgc sgd sge sgg sgk sgp sgr sgs sgt sk- ska skc skd ske skg skk skp skr sks skt spa spc spd spe spg spk spp spr sps spt sr- sra src srd sre srg srk srp srr srs srt ss- ssa ssc ssd sse ssg ssk ssp ssr sss sst sta stc std ste stg stk stp str sts stt taa tac tad tae tag tak tap tar tas tat tca tcc tcd tce tcg tck tcp tcr tcs tct tda tdc tdd tde tdg tdk tdp tdr tds tdt te- tea tec ted tee teg tek tep ter tes tet tga tgc tge tgg tgk tgp tgr tgs tgt tka tkc tke tkg tkk tkp tkr tks tkt tpa tpc tpd tpe tpg tpk tpp tpr tps tpt tra trc trd tre trg trk trp trr trs trt tsa tsc tsd tse tsg tsk tsp tsr tss tst tta ttc ttd tte ttg ttk ttp ttr tts ttt