-al a-a a-c aaa aac aae aag aal aas ac- aca acc ace acg acl acs aea aec aee aeg ael aes ag- aga agc age agg agl ags al- ala alc ale alg all als as- asa asc ase asg asl ass c-- caa cac cae cag cal cas cca ccc cce ccg ccl ccs ce- cea cec cee ceg cel ces cga cgc cge cgg cgl cgs cl- cla clc cle clg cll cls csa csc cse csg csl css eaa eac eae eag eal eas ec- eca ecc ece ecg ecl ecs eea eec eee eeg eel ees ega egc ege egg egl egs ela elc ele elg ell els es- esa esc ese esg esl ess gaa gac gae gag gal gas gca gcc gce gcg gcl gcs ge- gea gec gee geg gel ges gga ggc ggg ggs gla glc gle glg gll gls gsa gsc gse gsg gsl gss la- laa lac lae lag lal las lca lcc lce lcg lcl lcs lea lec lee leg lel les lga lgc lge lgg lgl lgs lla llc lle llg lll lls lsa lsc lse lsg lsl lss saa sac sae sag sal sas sca scc sce scg scl scs se- sea sec see seg sel ses sga sgc sge sgg sgl sgs sla slc sle slg sll sls ss- ssa ssc sse ssg ssl sss