-al -ol a-a a-c aaa aac aaf aag aak aal aao aas ac- aca acc acf acg ack acl aco acs af- afa afc aff afg afk afl afo afs ag- aga agc agf agg agk agl ago ags aka akc akg akk akl ako aks al- ala alc alf alg alk all alo als aoa aoc aof aog aok aol aoo aos as- asa asc asf asg ask asl aso ass c-- caa cac caf cag cak cal cao cas cca ccc ccf ccg cck ccl cco ccs cfa cfc cff cfg cfk cfl cfo cfs cga cgc cgg cgl cgo cgs cka ckc cko cks cl- cla clc clf clg clk cll clo cls co- coa coc cof cog cok col coo cos csa csc csf csg csk csl cso css faa fac faf fag fak fal fao fas fca fcc fcf fcg fck fcl fco fcs ffa ffc fff ffg ffk ffl ffo ffs fga fgc fgf fgg fgl fgs fka fkc fkf fkg fkk fkl fla flc flf flg fll flo fls foa foc fof fog fok fol foo fos fsa fsc fsf fsg fsk fsl fso fss gaa gac gaf gag gak gal gao gas gca gcc gcf gcg gck gcl gco gcs gfa gfc gff gfk gfl gfo gfs gga ggc ggg ggo ggs gka gko gks gla glc glf glg glk gll glo gls goa goc gof gog gok gol goo gos gsa gsc gsf gsg gsk gsl gso gss ka- kaa kac kaf kag kak kal kao kas kca kcc kcg kck kcl kcs kfa kfc kff kfg kfo kfs kga kgc kgf kgl kgo kgs kkc kkk kkl kks kl- kla klc klf klg klo kls koa koc kof kog kok kol koo kos ksa ksc ksf ksg ksk ksl kso kss la- laa lac laf lag lak lal lao las lca lcc lcf lcg lck lcl lco lcs lfa lfc lff lfg lfk lfl lfo lfs lga lgc lgf lgg lgk lgl lgo lgs lka lkg lkl lks lla llc llf llg llk lll llo lls loa loc lof log lok lol loo los lsa lsc lsf lsg lsk lsl lso lss oaa oac oaf oag oak oal oao oas oc- oca occ ocf ocg ock ocl oco ocs of- ofa ofc off ofg ofl ofo ofs oga ogc ogf ogg ogl ogo ogs oka okc okg okk okl oko oks ola olc olf olg olk oll olo ols oo- ooa ooc oof oog ook ool ooo oos os- osa osc osf osg osk osl oso oss saa sac saf sag sak sal sao sas sca scc scf scg sck scl sco scs sfa sfc sff sfg sfk sfl sfo sfs sga sgc sgf sgg sgk sgl sgo sgs sk- ska skc skf skg skk skl sko sks sla slc slf slg slk sll slo sls soa soc sof sog sok sol soo sos ss- ssa ssc ssf ssg ssk ssl sso sss