a-a a-c aaa aac aag aao aas aav ac- aca acc acg aco acs acv ag- aga agc agg ago ags agv aoa aoc aog aoo aos aov as- asa asc asg aso ass asv av- ava avc avg avo avs c-- caa cac cag cao cas cav cca ccc ccg cco ccs ccv cga cgc cgg cgo cgs cgv co- coa coc cog coo cos cov csa csc csg cso css csv cva cvc cvg cvo cvs cvv gaa gac gag gao gas gav gca gcc gcg gco gcs gga ggc ggg ggo ggs ggv goa goc gog goo gos gov gsa gsc gsg gso gss gsv gva gvc gvg gvo gvs oaa oac oag oao oas oav oc- oca occ ocg oco ocs ocv oga ogc ogg ogo ogs oo- ooa ooc oog ooo oos oov os- osa osc osg oso oss osv ov- ova ovc ovo ovs ovv saa sac sag sao sas sav sca scc scg sco scs scv sga sgc sgg sgo sgs sgv soa soc sog soo sos sov ss- ssa ssc ssg sso sss ssv sva svc svg svo svs svv v-a vaa vac vag vao vas vav vca vcc vco vcs vga vgc vgg vgo vgs voa voc vog voo vos vov vsa vsc vsg vso vss vsv vva vvc vvg vvo vvs vvv