c-- ccc ccd cce cch ccm ccs cdc cdd cde cdh cdm cds ce- cec ced cee ceh cem ces ch- chc chd che chh chm chs cmc cmd cme cmh cmm cms csc csd cse csh csm css dcc dcd dce dcm dcs ddc ddd dde ddh ddm dds de- dec ded dee deh dem des dh- dhc dhd dhe dhh dhm dhs dmc dmd dme dmh dmm dms dsc dsd dse dsh dsm dss ec- ecc ecd ece ech ecm ecs ed- edc edd ede edh edm eds eec eed eee eem ees ehc ehd ehe ehh ehm ehs em- emc emd eme emh emm ems es- esc esd ese esh esm ess hcc hcd hce hch hcm hcs hdc hdd hde hdh hdm hds he- hec hed hee heh hem hes hhc hhd hhe hhh hhm hhs hmc hmd hme hmh hmm hms hsc hsd hse hsh hsm hss mc- mcc mcd mce mch mcm mcs mdc mdd mde mdh mdm mds mec med mee meh mem mes mhc mhd mhh mhm mhs mmc mmd mme mmh mmm mms msc msd mse msh msm mss scc scd sce sch scm scs sdc sdd sde sdh sdm sds se- sec sed see seh sem ses sh- shc shd she shh shm shs smc smd sme smh smm sms ss- ssc ssd sse ssh ssm sss