-er -ic a-a a-c a-i aaa aac aae aag aai aar aas aau ac- aca acc ace acg aci acr acs acu aea aec aee aeg aei aer aes aeu ag- aga agc age agg agi agr ags agu ai- aia aic aie aig aii air ais aiu ar- ara arc are arg ari arr ars aru as- asa asc ase asg asi asr ass asu au- aua auc aue aug aui aur aus c-- caa cac cae cag cai car cas cau cca ccc cce ccg cci ccr ccs ccu ce- cea cec cee ceg cei cer ces ceu cga cgc cge cgg cgi cgr cgs cgu ci- cia cic cie cig cii cir cis ciu cra crc cre crg cri crr crs cru csa csc cse csg csi csr css csu cua cuc cue cug cui cur cus cuu eaa eac eae eag eai ear eas eau ec- eca ecc ece ecg eci ecr ecs ecu eea eec eee eeg eer ees ega egc ege egg egi egr egs egu eia eic eie eig eii eir eis eiu era erc ere erg eri err ers eru es- esa esc ese esg esi esr ess esu eu- eua euc eue eug eui eur eus gaa gac gae gag gai gar gas gau gca gcc gce gcg gci gcr gcs gcu ge- gea gec gee geg gei ger ges geu gga ggc ggg ggi ggr ggs ggu gia gic gie gig gii gir gis giu gra grc gre grg gri grr grs gru gsa gsc gse gsg gsi gsr gss gsu gu- gua guc gue gug gui gur gus guu ia- iaa iac iae iag iai iar ias iau ica icc ice icg ici icr ics icu ie- iea iec iee ieg iei ier ies iga igc ige igg igi igr igs igu iia iic iie iii iir iis iiu ir- ira irc ire irg iri irr irs iru is- isa isc ise isg isi isr iss isu iu- iua iuc iue iug iui iur ius ra- raa rac rae rag rai rar ras rau rca rcc rce rcg rci rcr rcs rcu re- rea rec ree reg rei rer res reu rga rgc rge rgg rgi rgr rgs ria ric rie rig rii rir ris rra rrc rrg rri rrr rrs rru rsa rsc rse rsg rsi rsr rss rsu rua ruc rue rug rui rur rus ruu saa sac sae sag sai sar sas sau sca scc sce scg sci scr scs scu se- sea sec see seg sei ser ses seu sga sgc sge sgg sgi sgr sgs sgu sia sic sie sig sii sir sis siu sr- sra src sre srg sri srr srs ss- ssa ssc sse ssg ssi ssr sss ssu sua suc sue sug sui sur sus suu ua- uaa uac uae uag uai uar uas uau uca ucc uce ucg uci ucr ucs ucu uea uec uee ueg uei uer ues uga ugc uge ugg ugi ugr ugs ugu uia uic uie uig uii uir uis uiu ur- ura urc ure urg uri urr urs uru usa usc use usg usi usr uss usu uua uuc uue uug uur uus uuu