-ic a-a a-c a-i aaa aac aag aai aao aar ac- aca acc acg aci aco acr ag- aga agc agg agi ago agr ai- aia aic aig aii aio air aoa aoc aog aoi aoo aor ar- ara arc arg ari aro arr c-- caa cac cag cai cao car cca ccc ccg cci cco ccr cga cgc cgg cgi cgo cgr ci- cia cic cig cii cio cir co- coa coc cog coi coo cor cra crc crg cri cro crr gaa gac gag gai gao gar gca gcc gcg gci gco gcr gga ggc ggg ggi ggo ggr gia gic gig gii gio gir goa goc gog goi goo gor gra grc grg gri gro grr ia- iaa iac iag iai iao iar ica icc icg ici ico icr iga igc igg igi igo igr iia iic iii iio iir io- ioa ioc iog ioi ioo ior ir- ira irc irg iri iro irr o-i oaa oac oag oai oao oar oc- oca occ ocg oci oco ocr oga ogc ogg ogi ogo oia oic oii oio oir oo- ooa ooc oog ooi ooo oor or- ora orc org ori oro orr ra- raa rac rag rai rao rar rca rcc rcg rci rco rcr rga rgc rgg rgi rgo rgr ria ric rig rii rio rir roa roc rog roi roo ror rra rrc rrg rri rrr