-al -ol a-a a-c aaa aac aae aag aal aao ac- aca acc ace acg acl aco aea aec aee aeg ael aeo ag- aga agc age agg agl ago al- ala alc ale alg all alo aoa aoc aoe aog aol aoo c-- caa cac cae cag cal cao cca ccc cce ccg ccl cco ce- cea cec cee ceg cel ceo cga cgc cge cgg cgl cgo cl- cla clc cle clg cll clo co- coa coc coe cog col coo eaa eac eae eag eal eao ec- eca ecc ece ecg ecl eco eea eec eee eeg eel eeo ega egc ege egg egl ego ela elc ele elg ell elo eo- eoa eoc eoe eog eol eoo gaa gac gae gag gal gao gca gcc gce gcg gcl gco ge- gea gec gee geg gel geo gga ggc ggg ggo gla glc gle glg gll glo goa goc goe gog gol goo la- laa lac lae lag lal lao lca lcc lce lcg lcl lco lea lec lee leg lel leo lga lgc lge lgg lgl lgo lla llc lle llg lll llo loa loc loe log lol loo oaa oac oae oag oal oao oc- oca occ ocg ocl oco oea oec oee oeg oel oeo oga ogc oge ogg ogl ogo ola olc ole olg oll olo oo- ooa ooc oog ool ooo