-al -ol a-a a-c aaa aac aae aag aak aal aao ac- aca acc ace acg ack acl aco aea aec aee aeg aek ael aeo ag- aga agc age agg agk agl ago aka akc ake akg akk akl ako al- ala alc ale alg alk all alo aoa aoc aoe aog aok aol aoo c-- caa cac cae cag cak cal cao cca ccc cce ccg cck ccl cco ce- cea cec cee ceg cek cel ceo cga cgc cge cgg cgl cgo cka ckc cko cl- cla clc cle clg clk cll clo co- coa coc coe cog cok col coo eaa eac eae eag eak eal eao ec- eca ecc ece ecg eck ecl eco eea eec eee eeg eek eel eeo ega egc ege egg egl ego eka ekc eke ekg ekl eko ela elc ele elg elk ell elo eo- eoa eoc eoe eog eok eol eoo gaa gac gae gag gak gal gao gca gcc gce gcg gck gcl gco ge- gea gec gee geg gek gel geo gga ggc ggg ggo gka gko gla glc gle glg glk gll glo goa goc goe gog gok gol goo ka- kaa kac kae kag kak kal kao kca kcc kce kcg kck kcl ke- kea kec kee keg kek kel keo kga kgc kgl kgo kkc kke kkk kkl kl- kla klc klg klo koa koc koe kog kok kol koo la- laa lac lae lag lak lal lao lca lcc lce lcg lck lcl lco lea lec lee leg lek lel leo lga lgc lge lgg lgk lgl lgo lka lkg lkl lla llc lle llg llk lll llo loa loc loe log lok lol loo oaa oac oae oag oak oal oao oc- oca occ ocg ock ocl oco oea oec oee oeg oel oeo oga ogc oge ogg ogl ogo oka okc oke okg okk okl oko ola olc ole olg olk oll olo oo- ooa ooc oog ook ool ooo