-ic c-- ccc ccd cce cci cck ccm ccs cdc cdd cde cdi cdk cdm cds ce- cec ced cee cei cek cem ces ci- cic cid cie cii cik cim cis ckc ckd cki ckm cks cmc cmd cme cmi cmk cmm cms csc csd cse csi csk csm css dcc dcd dce dci dck dcm dcs ddc ddd dde ddi ddk ddm dds de- dec ded dee dei dek dem des di- dic did die dii dik dim dis dkc dke dki dkk dkm dks dmc dmd dme dmi dmk dmm dms dsc dsd dse dsi dsk dsm dss ec- ecc ecd ece eci eck ecm ecs ed- edc edd ede edi edk edm eds eec eed eee eek eem ees eic eid eie eii eik eim eis ekc ekd eke eki eks em- emc emd eme emi emk emm ems es- esc esd ese esi esk esm ess i-d icc icd ice ici ick icm ics idc idd ide idi idk idm ids ie- iec ied iee iei iek iem ies iic iid iie iii iim iis ikc ike iki ikk iks im- imc imd ime imi imm ims is- isc isd ise isi isk ism iss kcc kcd kce kci kck kcm kcs kdc kde kdk kdm kds ke- kec ked kee kei kek kem kes kic kid kie kii kik kim kis kkc kke kki kkk kkm kks kmc kmd kme kmi kmk kmm kms ksc ksd kse ksi ksk ksm kss mc- mcc mcd mce mci mck mcm mcs mdc mdd mde mdi mdk mdm mds mec med mee mei mek mem mes mi- mic mid mie mii mik mim mis mkc mkd mke mkk mkm mks mmc mmd mme mmi mmk mmm mms msc msd mse msi msk msm mss scc scd sce sci sck scm scs sdc sdd sde sdi sdk sdm sds se- sec sed see sei sek sem ses sic sid sie sii sik sim sis sk- skc skd ske ski skk skm sks smc smd sme smi smk smm sms ss- ssc ssd sse ssi ssk ssm sss