a-a a-c aaa aac aag aah aas ac- aca acc acg ach acs ag- aga agc agg agh ags aha ahc ahg ahh ahs as- asa asc asg ash ass c-- caa cac cag cah cas cca ccc ccg cch ccs cga cgc cgg cgh cgs ch- cha chc chg chh chs csa csc csg csh css gaa gac gag gah gas gca gcc gcg gch gcs gga ggc ggg ggh ggs gha ghc ghg ghh ghs gsa gsc gsg gss haa hac hag hah has hca hcc hcg hch hcs hga hgc hgg hgh hgs hha hhc hhg hhh hhs hsa hsc hsg hsh hss saa sac sag sah sas sca scc scg sch scs sga sgc sgg sgh sgs sh- sha shc shg shh shs ss- ssa ssc ssg ssh sss