c-- ccc ccd cce cch ccm cdc cdd cde cdh cdm ce- cec ced cee ceh cem ch- chc chd che chh chm cmc cmd cme cmh cmm dcc dcd dce dcm ddc ddd dde ddh ddm de- dec ded dee deh dem dh- dhc dhd dhe dhh dhm dmc dmd dme dmh dmm ec- ecc ecd ece ech ecm ed- edc edd ede edh edm eec eed eee eem ehc ehd ehe ehh ehm em- emc emd eme emh emm hcc hcd hce hch hcm hdc hdd hde hdh hdm he- hec hed hee heh hem hhc hhd hhe hhh hhm hmc hmd hme hmh hmm mc- mcc mcd mce mch mcm mdc mdd mde mdh mdm mec med mee meh mem mhc mhd mhh mhm mmc mmd mme mmh mmm