-ic c-- ccc cce cci cck ccl ccm ccs ce- cec cee cei cek cel cem ces ci- cic cie cii cik cil cim cis ckc cki ckm cks cl- clc cle cli clk cll clm cls cmc cme cmi cmk cml cmm cms csc cse csi csk csl csm css ec- ecc ece eci eck ecl ecm ecs eec eee eek eel eem ees eic eie eii eik eil eim eis ekc eke eki ekl eks elc ele eli elk ell elm els em- emc eme emi emk eml emm ems es- esc ese esi esk esl esm ess icc ice ici ick icl icm ics ie- iec iee iei iek iel iem ies iic iie iii iil iim iis ikc ike iki ikk ikl iks il- ilc ile ili ilk ill ilm ils im- imc ime imi iml imm ims is- isc ise isi isk isl ism iss kcc kce kci kck kcl kcm kcs ke- kec kee kei kek kel kem kes kic kie kii kik kil kim kis kkc kke kki kkk kkl kkm kks kl- klc kli klm kls kmc kme kmi kmk kml kmm kms ksc kse ksi ksk ksl ksm kss lcc lce lci lck lcl lcm lcs lec lee lei lek lel lem les lic lie lii lik lil lim lis lkl lks llc lle lli llk lll llm lls lmc lme lmi lmk lml lmm lms lsc lse lsi lsk lsl lsm lss mc- mcc mce mci mck mcl mcm mcs mec mee mei mek mel mem mes mi- mic mie mii mik mil mim mis mkc mke mkk mkl mkm mks mlc mle mli mlk mll mlm mls mmc mme mmi mmk mml mmm mms msc mse msi msk msl msm mss scc sce sci sck scl scm scs se- sec see sei sek sel sem ses sic sie sii sik sil sim sis sk- skc ske ski skk skl skm sks slc sle sli slk sll slm sls smc sme smi smk sml smm sms ss- ssc sse ssi ssk ssl ssm sss