-al -ol a-a a-c aaa aac aaf aak aal aao aas ac- aca acc acf ack acl aco acs af- afa afc aff afk afl afo afs aka akc akk akl ako aks al- ala alc alf alk all alo als aoa aoc aof aok aol aoo aos as- asa asc asf ask asl aso ass c-- caa cac caf cak cal cao cas cca ccc ccf cck ccl cco ccs cfa cfc cff cfk cfl cfo cfs cka ckc cko cks cl- cla clc clf clk cll clo cls co- coa coc cof cok col coo cos csa csc csf csk csl cso css faa fac faf fak fal fao fas fca fcc fcf fck fcl fco fcs ffa ffc fff ffk ffl ffo ffs fka fkc fkf fkk fkl fla flc flf fll flo fls foa foc fof fok fol foo fos fsa fsc fsf fsk fsl fso fss ka- kaa kac kaf kak kal kao kas kca kcc kck kcl kcs kfa kfc kff kfo kfs kkc kkk kkl kks kl- kla klc klf klo kls koa koc kof kok kol koo kos ksa ksc ksf ksk ksl kso kss la- laa lac laf lak lal lao las lca lcc lcf lck lcl lco lcs lfa lfc lff lfk lfl lfo lfs lka lkl lks lla llc llf llk lll llo lls loa loc lof lok lol loo los lsa lsc lsf lsk lsl lso lss oaa oac oaf oak oal oao oas oc- oca occ ocf ock ocl oco ocs of- ofa ofc off ofl ofo ofs oka okc okk okl oko oks ola olc olf olk oll olo ols oo- ooa ooc oof ook ool ooo oos os- osa osc osf osk osl oso oss saa sac saf sak sal sao sas sca scc scf sck scl sco scs sfa sfc sff sfk sfl sfo sfs sk- ska skc skf skk skl sko sks sla slc slf slk sll slo sls soa soc sof sok sol soo sos ss- ssa ssc ssf ssk ssl sso sss