-ic a-a a-c a-i aaa aac aag aai aap ac- aca acc acg aci acp ag- aga agc agg agi agp ai- aia aic aig aii aip ap- apa apc apg api app c-- caa cac cag cai cap cca ccc ccg cci ccp cga cgc cgg cgi cgp ci- cia cic cig cii cip cpa cpc cpg cpi cpp g-p gaa gac gag gai gap gca gcc gcg gci gcp gga ggc ggg ggi ggp gia gic gig gii gip gpa gpc gpg gpi gpp ia- iaa iac iag iai iap ica icc icg ici icp iga igc igg igi igp iia iic iii iip ipa ipc ipg ipi ipp p-p paa pac pag pai pap pca pcc pcg pci pcp pga pgc pgg pgi pgp pia pic pig pii pip ppa ppc ppg ppi ppp