c-- ccc ccd cce ccf cch ccs cdc cdd cde cdf cdh cds ce- cec ced cee cef ceh ces cfc cfd cfe cff cfh cfs ch- chc chd che chf chh chs csc csd cse csf csh css dcc dcd dce dcf dcs ddc ddd dde ddf ddh dds de- dec ded dee def deh des dfc dfd dfe dff dfh dfs dh- dhc dhd dhe dhf dhh dhs dsc dsd dse dsf dsh dss ec- ecc ecd ece ecf ech ecs ed- edc edd ede edf edh eds eec eed eee eef ees ef- efc efd efe eff efh efs ehc ehd ehe ehf ehh ehs es- esc esd ese esf esh ess fcc fcd fce fcf fcs fdc fdd fde fdf fdh fds fec fed fee fef feh fes ffc ffd ffe fff ffh ffs fhc fhe fhf fhh fhs fsc fsd fse fsf fsh fss hcc hcd hce hcf hch hcs hdc hdd hde hdf hdh hds he- hec hed hee hef heh hes hfc hfd hfe hff hfh hfs hhc hhd hhe hhf hhh hhs hsc hsd hse hsf hsh hss scc scd sce scf sch scs sdc sdd sde sdf sdh sds se- sec sed see sef seh ses sfc sfd sfe sff sfh sfs sh- shc shd she shf shh shs ss- ssc ssd sse ssf ssh sss