-ic c-- ccc ccd cce cci cck ccl ccs cdc cdd cde cdi cdk cdl cds ce- cec ced cee cei cek cel ces ci- cic cid cie cii cik cil cis ckc ckd cki cks cl- clc cld cle cli clk cll cls csc csd cse csi csk csl css dcc dcd dce dci dck dcl dcs ddc ddd dde ddi ddk ddl dds de- dec ded dee dei dek del des di- dic did die dii dik dil dis dkc dke dki dkk dkl dks dl- dlc dld dle dli dlk dll dls dsc dsd dse dsi dsk dsl dss ec- ecc ecd ece eci eck ecl ecs ed- edc edd ede edi edk edl eds eec eed eee eek eel ees eic eid eie eii eik eil eis ekc ekd eke eki ekl eks elc eld ele eli elk ell els es- esc esd ese esi esk esl ess i-d icc icd ice ici ick icl ics idc idd ide idi idk idl ids ie- iec ied iee iei iek iel ies iic iid iie iii iil iis ikc ike iki ikk ikl iks il- ilc ild ile ili ilk ill ils is- isc isd ise isi isk isl iss kcc kcd kce kci kck kcl kcs kdc kde kdk kdl kds ke- kec ked kee kei kek kel kes kic kid kie kii kik kil kis kkc kke kki kkk kkl kks kl- klc kld kli kls ksc ksd kse ksi ksk ksl kss lcc lcd lce lci lck lcl lcs ldc ldd lde ldi ldk ldl lds lec led lee lei lek lel les lic lid lie lii lik lil lis lkl lks llc lld lle lli llk lll lls lsc lsd lse lsi lsk lsl lss scc scd sce sci sck scl scs sdc sdd sde sdi sdk sdl sds se- sec sed see sei sek sel ses sic sid sie sii sik sil sis sk- skc skd ske ski skk skl sks slc sld sle sli slk sll sls ss- ssc ssd sse ssi ssk ssl sss