-al -ol a-a a-c a-z aaa aac aag aal aao aaz ac- aca acc acg acl aco acz ag- aga agc agg agl ago agz al- ala alc alg all alo alz aoa aoc aog aol aoo az- aza azg azo azz c-- caa cac cag cal cao caz cca ccc ccg ccl cco ccz cga cgc cgg cgl cgo cl- cla clc clg cll clo clz co- coa coc cog col coo coz cz- czc czo gaa gac gag gal gao gaz gca gcc gcg gcl gco gga ggc ggg ggo ggz gla glc glg gll glo glz goa goc gog gol goo goz gza gzo la- laa lac lag lal lao laz lca lcc lcg lcl lco lga lgc lgg lgl lgo lla llc llg lll llo llz loa loc log lol loo loz lzo oaa oac oag oal oao oc- oca occ ocg ocl oco ocz oga ogc ogg ogl ogo ola olc olg oll olo oo- ooa ooc oog ool ooo oza ozo ozz z-g zaa zac zag zao zaz zcl zco zgg zla zo- zoa zoc zog zol zoo zzz