-al -ol a-a a-c aaa aac aae aag aal aao aas ac- aca acc ace acg acl aco acs aea aec aee aeg ael aeo aes ag- aga agc age agg agl ago ags al- ala alc ale alg all alo als aoa aoc aoe aog aol aoo aos as- asa asc ase asg asl aso ass c-- caa cac cae cag cal cao cas cca ccc cce ccg ccl cco ccs ce- cea cec cee ceg cel ceo ces cga cgc cge cgg cgl cgo cgs cl- cla clc cle clg cll clo cls co- coa coc coe cog col coo cos csa csc cse csg csl cso css eaa eac eae eag eal eao eas ec- eca ecc ece ecg ecl eco ecs eea eec eee eeg eel eeo ees ega egc ege egg egl ego egs ela elc ele elg ell elo els eo- eoa eoc eoe eog eol eoo eos es- esa esc ese esg esl eso ess gaa gac gae gag gal gao gas gca gcc gce gcg gcl gco gcs ge- gea gec gee geg gel geo ges gga ggc ggg ggo ggs gla glc gle glg gll glo gls goa goc goe gog gol goo gos gsa gsc gse gsg gsl gso gss la- laa lac lae lag lal lao las lca lcc lce lcg lcl lco lcs lea lec lee leg lel leo les lga lgc lge lgg lgl lgo lgs lla llc lle llg lll llo lls loa loc loe log lol loo los lsa lsc lse lsg lsl lso lss oaa oac oae oag oal oao oas oc- oca occ ocg ocl oco ocs oea oec oee oeg oel oeo oes oga ogc oge ogg ogl ogo ogs ola olc ole olg oll olo ols oo- ooa ooc oog ool ooo oos os- osa osc ose osg osl oso oss saa sac sae sag sal sao sas sca scc sce scg scl sco scs se- sea sec see seg sel seo ses sga sgc sge sgg sgl sgo sgs sla slc sle slg sll slo sls soa soc soe sog sol soo sos ss- ssa ssc sse ssg ssl sso sss