-al -ol a-a a-c aaa aac aaf aak aal aao aar aas ac- aca acc acf ack acl aco acr acs af- afa afc aff afk afl afo afr afs aka akc akk akl ako akr aks al- ala alc alf alk all alo alr als aoa aoc aof aok aol aoo aor aos ar- ara arc arf ark arl aro arr ars as- asa asc asf ask asl aso asr ass c-- caa cac caf cak cal cao car cas cca ccc ccf cck ccl cco ccr ccs cfa cfc cff cfk cfl cfo cfr cfs cka ckc cko cks cl- cla clc clf clk cll clo clr cls co- coa coc cof cok col coo cor cos cra crc crf crk crl cro crr crs csa csc csf csk csl cso csr css faa fac faf fak fal fao far fas fca fcc fcf fck fcl fco fcr fcs ffa ffc fff ffk ffl ffo ffr ffs fka fkc fkf fkk fkl fla flc flf fll flo flr fls foa foc fof fok fol foo for fos fra frc frf frk frl fro frr frs fsa fsc fsf fsk fsl fso fsr fss ka- kaa kac kaf kak kal kao kar kas kca kcc kck kcl kcr kcs kfa kfc kff kfo kfs kkc kkk kkl kkr kks kl- kla klc klf klo klr kls koa koc kof kok kol koo kor kos kra krc krf krk krl kro krr krs ksa ksc ksf ksk ksl kso ksr kss la- laa lac laf lak lal lao lar las lca lcc lcf lck lcl lco lcr lcs lfa lfc lff lfk lfl lfo lfr lfs lka lkl lkr lks lla llc llf llk lll llo llr lls loa loc lof lok lol loo lor los lra lrc lrf lrk lro lrr lrs lsa lsc lsf lsk lsl lso lsr lss oaa oac oaf oak oal oao oar oas oc- oca occ ocf ock ocl oco ocr ocs of- ofa ofc off ofl ofo ofr ofs oka okc okk okl oko okr oks ola olc olf olk oll olo ols oo- ooa ooc oof ook ool ooo oor oos or- ora orc orf ork orl oro orr ors os- osa osc osf osk osl oso osr oss ra- raa rac raf rak ral rao rar ras rca rcc rcf rcl rco rcr rcs rfa rfc rff rfk rfl rfo rfr rfs rkc rkf rkk rko rks rla rlc rlf rll rlo rlr rls roa roc rof rok rol roo ror ros rra rrc rrf rrk rrl rrr rrs rsa rsc rsf rsk rsl rso rsr rss saa sac saf sak sal sao sar sas sca scc scf sck scl sco scr scs sfa sfc sff sfk sfl sfo sfr sfs sk- ska skc skf skk skl sko skr sks sla slc slf slk sll slo slr sls soa soc sof sok sol soo sor sos sr- sra src srf srk srl sro srr srs ss- ssa ssc ssf ssk ssl sso ssr sss