-er -ic a-a a-c a-i a-t aaa aac aae aag aai aam aar aas aat ac- aca acc ace acg aci acm acr acs act aea aec aee aeg aei aem aer aes aet ag- aga agc age agg agi agm agr ags agt ai- aia aic aie aig aii aim air ais ait ama amc ame amg ami amm amr ams amt ar- ara arc are arg ari arm arr ars art as- asa asc ase asg asi asm asr ass ast at- ata atc ate atg ati atm atr ats att c-- caa cac cae cag cai cam car cas cat cca ccc cce ccg cci ccm ccr ccs cct ce- cea cec cee ceg cei cem cer ces cet cga cgc cge cgg cgi cgm cgr cgs cgt ci- cia cic cie cig cii cim cir cis cit cma cmc cme cmg cmi cmm cmr cms cmt cra crc cre crg cri crm crr crs crt csa csc cse csg csi csm csr css cst cta ctc cte ctg cti ctm ctr cts ctt eaa eac eae eag eai eam ear eas eat ec- eca ecc ece ecg eci ecm ecr ecs ect eea eec eee eeg eem eer ees eet ega egc ege egg egi egm egr egs egt eia eic eie eig eii eim eir eis eit em- ema emc eme emg emi emm emr ems emt era erc ere erg eri erm err ers ert es- esa esc ese esg esi esm esr ess est eta etc ete etg eti etm etr ets ett gaa gac gae gag gai gam gar gas gat gca gcc gce gcg gci gcm gcr gcs gct ge- gea gec gee geg gei gem ger ges get gga ggc ggg ggi ggm ggr ggs ggt gia gic gie gig gii gim gir gis git gma gmc gme gmg gmi gmm gmr gms gmt gra grc gre grg gri grm grr grs grt gsa gsc gse gsg gsi gsm gsr gss gst gta gtc gte gtg gti gtm gtr gts gtt ia- iaa iac iae iag iai iam iar ias iat ica icc ice icg ici icm icr ics ict ie- iea iec iee ieg iei iem ier ies iet iga igc ige igg igi igm igr igs igt iia iic iie iii iim iir iis iit im- ima imc ime img imi imm ims imt ir- ira irc ire irg iri irm irr irs irt is- isa isc ise isg isi ism isr iss ist ita itc ite itg iti itm its itt m-r maa mac mae mag mai mam mar mas mat mc- mca mcc mce mcg mci mcm mcr mcs mct mea mec mee meg mei mem mer mes met mga mgc mge mgi mgm mgr mgs mgt mi- mia mic mie mig mii mim mir mis mit mma mmc mme mmg mmi mmm mmr mms mmt mra mrc mre mrg mri mrm mrr mrs mrt msa msc mse msg msi msm msr mss mst mta mtc mte mtg mti mtm mtr mts mtt ra- raa rac rae rag rai ram rar ras rat rca rcc rce rcg rci rcm rcr rcs rct re- rea rec ree reg rei rem rer res ret rga rgc rge rgg rgi rgr rgs rgt ria ric rie rig rii rim rir ris rit rma rmc rme rmg rmi rmm rmr rms rmt rra rrc rrg rri rrm rrr rrs rrt rsa rsc rse rsg rsi rsm rsr rss rst rta rtc rte rtg rti rtm rtr rts rtt saa sac sae sag sai sam sar sas sat sca scc sce scg sci scm scr scs sct se- sea sec see seg sei sem ser ses set sga sgc sge sgg sgi sgm sgr sgs sgt sia sic sie sig sii sim sir sis sit sma smc sme smg smi smm smr sms smt sr- sra src sre srg sri srm srr srs srt ss- ssa ssc sse ssg ssi ssm ssr sss sst sta stc ste stg sti stm str sts stt taa tac tae tag tai tam tar tas tat tca tcc tce tcg tci tcm tcr tcs tct te- tea tec tee teg tei tem ter tes tet tga tgc tge tgg tgi tgm tgr tgs tgt tia tic tie tig tii tim tir tis tit tma tmc tme tmg tmi tmm tmr tms tmt tra trc tre trg tri trm trr trs trt tsa tsc tse tsg tsi tsm tsr tss tst tta ttc tte ttg tti ttm ttr tts ttt