-ic a-a a-c a-i aaa aac aae aag aai aas ac- aca acc ace acg aci acs aea aec aee aeg aei aes ag- aga agc age agg agi ags ai- aia aic aie aig aii ais as- asa asc ase asg asi ass c-- caa cac cae cag cai cas cca ccc cce ccg cci ccs ce- cea cec cee ceg cei ces cga cgc cge cgg cgi cgs ci- cia cic cie cig cii cis csa csc cse csg csi css eaa eac eae eag eai eas ec- eca ecc ece ecg eci ecs eea eec eee eeg ees ega egc ege egg egi egs eia eic eie eig eii eis es- esa esc ese esg esi ess gaa gac gae gag gai gas gca gcc gce gcg gci gcs ge- gea gec gee geg gei ges gga ggc ggg ggi ggs gia gic gie gig gii gis gsa gsc gse gsg gsi gss ia- iaa iac iae iag iai ias ica icc ice icg ici ics ie- iea iec iee ieg iei ies iga igc ige igg igi igs iia iic iie iii iis is- isa isc ise isg isi iss saa sac sae sag sai sas sca scc sce scg sci scs se- sea sec see seg sei ses sga sgc sge sgg sgi sgs sia sic sie sig sii sis ss- ssa ssc sse ssg ssi sss