-er -ic a-a a-c a-i aaa aac aae aag aai aar aas aav ac- aca acc ace acg aci acr acs acv aea aec aee aeg aei aer aes aev ag- aga agc age agg agi agr ags agv ai- aia aic aie aig aii air ais aiv ar- ara arc are arg ari arr ars arv as- asa asc ase asg asi asr ass asv av- ava avc ave avg avi avr avs c-- caa cac cae cag cai car cas cav cca ccc cce ccg cci ccr ccs ccv ce- cea cec cee ceg cei cer ces cev cga cgc cge cgg cgi cgr cgs cgv ci- cia cic cie cig cii cir cis civ cra crc cre crg cri crr crs crv csa csc cse csg csi csr css csv cva cvc cve cvg cvi cvr cvs cvv eaa eac eae eag eai ear eas eav ec- eca ecc ece ecg eci ecr ecs ecv eea eec eee eeg eer ees eev ega egc ege egg egi egr egs eia eic eie eig eii eir eis eiv era erc ere erg eri err ers erv es- esa esc ese esg esi esr ess esv eva evc eve evg evi evr evs evv gaa gac gae gag gai gar gas gav gca gcc gce gcg gci gcr gcs ge- gea gec gee geg gei ger ges gev gga ggc ggg ggi ggr ggs ggv gia gic gie gig gii gir gis giv gra grc gre grg gri grr grs grv gsa gsc gse gsg gsi gsr gss gsv gva gvc gve gvg gvi gvr gvs i-v ia- iaa iac iae iag iai iar ias iav ica icc ice icg ici icr ics icv ie- iea iec iee ieg iei ier ies iev iga igc ige igg igi igr igs iia iic iie iii iir iis ir- ira irc ire irg iri irr irs irv is- isa isc ise isg isi isr iss isv iva ivc ive ivg ivi ivr ivs ivv ra- raa rac rae rag rai rar ras rav rca rcc rce rcg rci rcr rcs rcv re- rea rec ree reg rei rer res rev rga rgc rge rgg rgi rgr rgs rgv ria ric rie rig rii rir ris riv rra rrc rrg rri rrr rrs rsa rsc rse rsg rsi rsr rss rsv rva rvc rve rvg rvi rvr rvs rvv saa sac sae sag sai sar sas sav sca scc sce scg sci scr scs scv se- sea sec see seg sei ser ses sev sga sgc sge sgg sgi sgr sgs sgv sia sic sie sig sii sir sis siv sr- sra src sre srg sri srr srs srv ss- ssa ssc sse ssg ssi ssr sss ssv sva svc sve svg svi svr svs svv v-a v-e vaa vac vae vag vai var vas vav vca vcc vce vci vcr vcs vea vec vee veg vei ver ves vga vgc vgg vgr vgs vi- via vic vie vig vii vir vis viv vra vrc vre vrg vri vrr vrs vsa vsc vse vsg vsi vsr vss vsv vva vvc vvg vvi vvr vvs vvv