-al a-a a-c aaa aac aae aaf aak aal aap ac- aca acc ace acf ack acl acp aea aec aee aef aek ael aep af- afa afc afe aff afk afl afp aka akc ake akk akl akp al- ala alc ale alf alk all alp ap- apa apc ape apf apk apl app c-- caa cac cae caf cak cal cap cca ccc cce ccf cck ccl ccp ce- cea cec cee cef cek cel cep cfa cfc cfe cff cfk cfl cfp cka ckc cl- cla clc cle clf clk cll clp cpa cpc cpe cpf cpk cpl cpp eaa eac eae eaf eak eal eap ec- eca ecc ece ecf eck ecl eea eec eee eef eek eel eep ef- efa efc efe eff efl efp eka ekc eke ekf ekl ekp ela elc ele elf elk ell elp ep- epa epc epe epf epl epp faa fac fae faf fak fal fap fca fcc fce fcf fck fcl fcp fea fec fee fef fek fel fep ffa ffc ffe fff ffk ffl ffp fka fkc fkf fkk fkl fkp fla flc fle flf fll flp fpa fpc fpe fpk fpl fpp ka- kaa kac kae kaf kak kal kap kca kcc kce kck kcl kcp ke- kea kec kee kef kek kel kep kfa kfc kff kkc kke kkk kkl kkp kl- kla klc klf kpa kpc kpe kpf kpk kpl kpp l-p la- laa lac lae laf lak lal lap lca lcc lce lcf lck lcl lcp lea lec lee lef lek lel lep lfa lfc lfe lff lfk lfl lfp lka lkl lkp lla llc lle llf llk lll llp lpa lpc lpe lpf lpk lpl lpp p-p paa pac pae paf pak pal pap pca pcc pce pcf pck pcl pcp pea pec pee pef pek pel pep pfa pfc pfe pff pfk pfl pfp pka pkc pke pkf pkl pkp pla plc ple plf plk pll plp ppa ppc ppe ppf ppk ppl ppp