a-a a-c aaa aac aag aah aao aas ac- aca acc acg ach aco acs ag- aga agc agg agh ago ags aha ahc ahg ahh aho ahs aoa aoc aog aoh aoo aos as- asa asc asg ash aso ass c-- caa cac cag cah cao cas cca ccc ccg cch cco ccs cga cgc cgg cgh cgo cgs ch- cha chc chg chh cho chs co- coa coc cog coh coo cos csa csc csg csh cso css gaa gac gag gah gao gas gca gcc gcg gch gco gcs gga ggc ggg ggh ggo ggs gha ghc ghg ghh gho ghs goa goc gog goh goo gos gsa gsc gsg gso gss haa hac hag hah hao has hca hcc hcg hch hco hcs hga hgc hgg hgh hgo hgs hha hhc hhg hhh hho hhs hoa hoc hog hoh hoo hos hsa hsc hsg hsh hss oaa oac oag oah oao oas oc- oca occ ocg och oco ocs oga ogc ogg ogh ogo ogs oha ohc ohg ohh oho ohs oo- ooa ooc oog ooh ooo oos os- osa osc osg osh oso oss saa sac sag sah sao sas sca scc scg sch sco scs sga sgc sgg sgh sgo sgs sh- sha shc shg shh sho shs soa soc sog soh soo sos ss- ssa ssc ssg ssh sso sss