-er -ic a-a a-c a-i aaa aac aae aag aai aar aau ac- aca acc ace acg aci acr acu aea aec aee aeg aei aer aeu ag- aga agc age agg agi agr agu ai- aia aic aie aig aii air aiu ar- ara arc are arg ari arr aru au- aua auc aue aug aui aur c-- caa cac cae cag cai car cau cca ccc cce ccg cci ccr ccu ce- cea cec cee ceg cei cer ceu cga cgc cge cgg cgi cgr cgu ci- cia cic cie cig cii cir ciu cra crc cre crg cri crr cru cua cuc cue cug cui cur cuu eaa eac eae eag eai ear eau ec- eca ecc ece ecg eci ecr ecu eea eec eee eeg eer ega egc ege egg egi egr egu eia eic eie eig eii eir eiu era erc ere erg eri err eru eu- eua euc eue eug eui eur gaa gac gae gag gai gar gau gca gcc gce gcg gci gcr gcu ge- gea gec gee geg gei ger geu gga ggc ggg ggi ggr ggu gia gic gie gig gii gir giu gra grc gre grg gri grr gru gu- gua guc gue gug gui gur guu ia- iaa iac iae iag iai iar iau ica icc ice icg ici icr icu ie- iea iec iee ieg iei ier iga igc ige igg igi igr igu iia iic iie iii iir iiu ir- ira irc ire irg iri irr iru iu- iua iuc iue iug iui iur ra- raa rac rae rag rai rar rau rca rcc rce rcg rci rcr rcu re- rea rec ree reg rei rer reu rga rgc rge rgg rgi rgr ria ric rie rig rii rir rra rrc rrg rri rrr rru rua ruc rue rug rui rur ruu ua- uaa uac uae uag uai uar uau uca ucc uce ucg uci ucr ucu uea uec uee ueg uei uer uga ugc uge ugg ugi ugr ugu uia uic uie uig uii uir uiu ur- ura urc ure urg uri urr uru uua uuc uue uug uur uuu