-er -ic a-a a-c a-i a-t aaa aac aae aag aai aar aas aat aau ac- aca acc ace acg aci acr acs act acu aea aec aee aeg aei aer aes aet aeu ag- aga agc age agg agi agr ags agt agu ai- aia aic aie aig aii air ais ait aiu ar- ara arc are arg ari arr ars art aru as- asa asc ase asg asi asr ass ast asu at- ata atc ate atg ati atr ats att atu au- aua auc aue aug aui aur aus aut c-- caa cac cae cag cai car cas cat cau cca ccc cce ccg cci ccr ccs cct ccu ce- cea cec cee ceg cei cer ces cet ceu cga cgc cge cgg cgi cgr cgs cgt cgu ci- cia cic cie cig cii cir cis cit ciu cra crc cre crg cri crr crs crt cru csa csc cse csg csi csr css cst csu cta ctc cte ctg cti ctr cts ctt ctu cua cuc cue cug cui cur cus cut cuu eaa eac eae eag eai ear eas eat eau ec- eca ecc ece ecg eci ecr ecs ect ecu eea eec eee eeg eer ees eet ega egc ege egg egi egr egs egt egu eia eic eie eig eii eir eis eit eiu era erc ere erg eri err ers ert eru es- esa esc ese esg esi esr ess est esu eta etc ete etg eti etr ets ett etu eu- eua euc eue eug eui eur eus eut gaa gac gae gag gai gar gas gat gau gca gcc gce gcg gci gcr gcs gct gcu ge- gea gec gee geg gei ger ges get geu gga ggc ggg ggi ggr ggs ggt ggu gia gic gie gig gii gir gis git giu gra grc gre grg gri grr grs grt gru gsa gsc gse gsg gsi gsr gss gst gsu gta gtc gte gtg gti gtr gts gtt gtu gu- gua guc gue gug gui gur gus gut guu ia- iaa iac iae iag iai iar ias iat iau ica icc ice icg ici icr ics ict icu ie- iea iec iee ieg iei ier ies iet iga igc ige igg igi igr igs igt igu iia iic iie iii iir iis iit iiu ir- ira irc ire irg iri irr irs irt iru is- isa isc ise isg isi isr iss ist isu ita itc ite itg iti its itt itu iu- iua iuc iue iug iui iur ius iut ra- raa rac rae rag rai rar ras rat rau rca rcc rce rcg rci rcr rcs rct rcu re- rea rec ree reg rei rer res ret reu rga rgc rge rgg rgi rgr rgs rgt ria ric rie rig rii rir ris rit rra rrc rrg rri rrr rrs rrt rru rsa rsc rse rsg rsi rsr rss rst rsu rta rtc rte rtg rti rtr rts rtt rtu rua ruc rue rug rui rur rus rut ruu saa sac sae sag sai sar sas sat sau sca scc sce scg sci scr scs sct scu se- sea sec see seg sei ser ses set seu sga sgc sge sgg sgi sgr sgs sgt sgu sia sic sie sig sii sir sis sit siu sr- sra src sre srg sri srr srs srt ss- ssa ssc sse ssg ssi ssr sss sst ssu sta stc ste stg sti str sts stt stu sua suc sue sug sui sur sus sut suu taa tac tae tag tai tar tas tat tau tca tcc tce tcg tci tcr tcs tct tcu te- tea tec tee teg tei ter tes tet teu tga tgc tge tgg tgi tgr tgs tgt tgu tia tic tie tig tii tir tis tit tiu tra trc tre trg tri trr trs trt tru tsa tsc tse tsg tsi tsr tss tst tsu tta ttc tte ttg tti ttr tts ttt ttu tua tuc tue tug tui tur tus tut tuu ua- uaa uac uae uag uai uar uas uat uau uca ucc uce ucg uci ucr ucs uct ucu uea uec uee ueg uei uer ues uet uga ugc uge ugg ugi ugr ugs ugt ugu uia uic uie uig uii uir uis uit uiu ur- ura urc ure urg uri urr urs urt uru usa usc use usg usi usr uss ust usu uta utc ute uti utr uts utt utu uua uuc uue uug uur uus uut uuu