-al a-a a-c aaa aac aaf aak aal aas ac- aca acc acf ack acl acs af- afa afc aff afk afl afs aka akc akk akl aks al- ala alc alf alk all als as- asa asc asf ask asl ass c-- caa cac caf cak cal cas cca ccc ccf cck ccl ccs cfa cfc cff cfk cfl cfs cka ckc cks cl- cla clc clf clk cll cls csa csc csf csk csl css faa fac faf fak fal fas fca fcc fcf fck fcl fcs ffa ffc fff ffk ffl ffs fka fkc fkf fkk fkl fla flc flf fll fls fsa fsc fsf fsk fsl fss ka- kaa kac kaf kak kal kas kca kcc kck kcl kcs kfa kfc kff kfs kkc kkk kkl kks kl- kla klc klf kls ksa ksc ksf ksk ksl kss la- laa lac laf lak lal las lca lcc lcf lck lcl lcs lfa lfc lff lfk lfl lfs lka lkl lks lla llc llf llk lll lls lsa lsc lsf lsk lsl lss saa sac saf sak sal sas sca scc scf sck scl scs sfa sfc sff sfk sfl sfs sk- ska skc skf skk skl sks sla slc slf slk sll sls ss- ssa ssc ssf ssk ssl sss