c-- ccc ccd cce cch ccs cdc cdd cde cdh cds ce- cec ced cee ceh ces ch- chc chd che chh chs csc csd cse csh css dcc dcd dce dcs ddc ddd dde ddh dds de- dec ded dee deh des dh- dhc dhd dhe dhh dhs dsc dsd dse dsh dss ec- ecc ecd ece ech ecs ed- edc edd ede edh eds eec eed eee ees ehc ehd ehe ehh ehs es- esc esd ese esh ess hcc hcd hce hch hcs hdc hdd hde hdh hds he- hec hed hee heh hes hhc hhd hhe hhh hhs hsc hsd hse hsh hss scc scd sce sch scs sdc sdd sde sdh sds se- sec sed see seh ses sh- shc shd she shh shs ss- ssc ssd sse ssh sss