-er -ic a-a a-c a-i a-t aaa aac aae aag aai aar aat aau ac- aca acc ace acg aci acr act acu aea aec aee aeg aei aer aet aeu ag- aga agc age agg agi agr agt agu ai- aia aic aie aig aii air ait aiu ar- ara arc are arg ari arr art aru at- ata atc ate atg ati atr att atu au- aua auc aue aug aui aur aut c-- caa cac cae cag cai car cat cau cca ccc cce ccg cci ccr cct ccu ce- cea cec cee ceg cei cer cet ceu cga cgc cge cgg cgi cgr cgt cgu ci- cia cic cie cig cii cir cit ciu cra crc cre crg cri crr crt cru cta ctc cte ctg cti ctr ctt ctu cua cuc cue cug cui cur cut cuu eaa eac eae eag eai ear eat eau ec- eca ecc ece ecg eci ecr ect ecu eea eec eee eeg eer eet ega egc ege egg egi egr egt egu eia eic eie eig eii eir eit eiu era erc ere erg eri err ert eru eta etc ete etg eti etr ett etu eu- eua euc eue eug eui eur eut gaa gac gae gag gai gar gat gau gca gcc gce gcg gci gcr gct gcu ge- gea gec gee geg gei ger get geu gga ggc ggg ggi ggr ggt ggu gia gic gie gig gii gir git giu gra grc gre grg gri grr grt gru gta gtc gte gtg gti gtr gtt gtu gu- gua guc gue gug gui gur gut guu ia- iaa iac iae iag iai iar iat iau ica icc ice icg ici icr ict icu ie- iea iec iee ieg iei ier iet iga igc ige igg igi igr igt igu iia iic iie iii iir iit iiu ir- ira irc ire irg iri irr irt iru ita itc ite itg iti itt itu iu- iua iuc iue iug iui iur iut ra- raa rac rae rag rai rar rat rau rca rcc rce rcg rci rcr rct rcu re- rea rec ree reg rei rer ret reu rga rgc rge rgg rgi rgr rgt ria ric rie rig rii rir rit rra rrc rrg rri rrr rrt rru rta rtc rte rtg rti rtr rtt rtu rua ruc rue rug rui rur rut ruu taa tac tae tag tai tar tat tau tca tcc tce tcg tci tcr tct tcu te- tea tec tee teg tei ter tet teu tga tgc tge tgg tgi tgr tgt tgu tia tic tie tig tii tir tit tiu tra trc tre trg tri trr trt tru tta ttc tte ttg tti ttr ttt ttu tua tuc tue tug tui tur tut tuu ua- uaa uac uae uag uai uar uat uau uca ucc uce ucg uci ucr uct ucu uea uec uee ueg uei uer uet uga ugc uge ugg ugi ugr ugt ugu uia uic uie uig uii uir uit uiu ur- ura urc ure urg uri urr urt uru uta utc ute uti utr utt utu uua uuc uue uug uur uut uuu