-ic a-a a-c a-i aaa aac aag aai aao aar aas ac- aca acc acg aci aco acr acs ag- aga agc agg agi ago agr ags ai- aia aic aig aii aio air ais aoa aoc aog aoi aoo aor aos ar- ara arc arg ari aro arr ars as- asa asc asg asi aso asr ass c-- caa cac cag cai cao car cas cca ccc ccg cci cco ccr ccs cga cgc cgg cgi cgo cgr cgs ci- cia cic cig cii cio cir cis co- coa coc cog coi coo cor cos cra crc crg cri cro crr crs csa csc csg csi cso csr css gaa gac gag gai gao gar gas gca gcc gcg gci gco gcr gcs gga ggc ggg ggi ggo ggr ggs gia gic gig gii gio gir gis goa goc gog goi goo gor gos gra grc grg gri gro grr grs gsa gsc gsg gsi gso gsr gss ia- iaa iac iag iai iao iar ias ica icc icg ici ico icr ics iga igc igg igi igo igr igs iia iic iii iio iir iis io- ioa ioc iog ioi ioo ior ios ir- ira irc irg iri iro irr irs is- isa isc isg isi iso isr iss o-i oaa oac oag oai oao oar oas oc- oca occ ocg oci oco ocr ocs oga ogc ogg ogi ogo ogs oia oic oii oio oir ois oo- ooa ooc oog ooi ooo oor oos or- ora orc org ori oro orr ors os- osa osc osg osi oso osr oss ra- raa rac rag rai rao rar ras rca rcc rcg rci rco rcr rcs rga rgc rgg rgi rgo rgr rgs ria ric rig rii rio rir ris roa roc rog roi roo ror ros rra rrc rrg rri rrr rrs rsa rsc rsg rsi rso rsr rss saa sac sag sai sao sar sas sca scc scg sci sco scr scs sga sgc sgg sgi sgo sgr sgs sia sic sig sii sio sir sis soa soc sog soi soo sor sos sr- sra src srg sri sro srr srs ss- ssa ssc ssg ssi sso ssr sss