-ic c-- ccc ccf cci cck ccl ccs cfc cff cfi cfk cfl cfs ci- cic cif cii cik cil cis ckc cki cks cl- clc clf cli clk cll cls csc csf csi csk csl css fcc fcf fci fck fcl fcs ffc fff ffi ffk ffl ffs fic fif fii fik fil fis fkc fkf fki fkk fkl flc flf fli fll fls fsc fsf fsi fsk fsl fss i-f icc icf ici ick icl ics ifc iff ifi ifl ifs iic iif iii iil iis ikc ikf iki ikk ikl iks il- ilc ilf ili ilk ill ils is- isc isf isi isk isl iss kcc kci kck kcl kcs kfc kff kfi kfs kic kif kii kik kil kis kkc kki kkk kkl kks kl- klc klf kli kls ksc ksf ksi ksk ksl kss lcc lcf lci lck lcl lcs lfc lff lfi lfk lfl lfs lic lif lii lik lil lis lkl lks llc llf lli llk lll lls lsc lsf lsi lsk lsl lss scc scf sci sck scl scs sfc sff sfi sfk sfl sfs sic sif sii sik sil sis sk- skc skf ski skk skl sks slc slf sli slk sll sls ss- ssc ssf ssi ssk ssl sss