-al -ol a-a a-c aaa aac aag aal aao ac- aca acc acg acl aco ag- aga agc agg agl ago al- ala alc alg all alo aoa aoc aog aol aoo c-- caa cac cag cal cao cca ccc ccg ccl cco cga cgc cgg cgl cgo cl- cla clc clg cll clo co- coa coc cog col coo gaa gac gag gal gao gca gcc gcg gcl gco gga ggc ggg ggo gla glc glg gll glo goa goc gog gol goo la- laa lac lag lal lao lca lcc lcg lcl lco lga lgc lgg lgl lgo lla llc llg lll llo loa loc log lol loo oaa oac oag oal oao oc- oca occ ocg ocl oco oga ogc ogg ogl ogo ola olc olg oll olo oo- ooa ooc oog ool ooo