-er c-- ccc ccd cce ccf cch ccr cdc cdd cde cdf cdh cdr ce- cec ced cee cef ceh cer cfc cfd cfe cff cfh cfr ch- chc chd che chf chh chr crc crd cre crf crh crr dcc dcd dce dcf dcr ddc ddd dde ddf ddh ddr de- dec ded dee def deh der dfc dfd dfe dff dfh dfr dh- dhc dhd dhe dhf dhh dhr drc drd dre drr ec- ecc ecd ece ecf ech ecr ed- edc edd ede edf edh edr eec eed eee eef eer ef- efc efd efe eff efh efr ehc ehd ehe ehf ehh ehr erc erd ere erf erh err fcc fcd fce fcf fcr fdc fdd fde fdf fdh fdr fec fed fee fef feh fer ffc ffd ffe fff ffh ffr fhc fhe fhf fhh fhr frc frd fre frf frh frr hcc hcd hce hcf hch hcr hdc hdd hde hdf hdh hdr he- hec hed hee hef heh her hfc hfd hfe hff hfh hfr hhc hhd hhe hhf hhh hhr hr- hrc hrd hre hrf hrh hrr rcc rcd rce rcf rch rcr rdc rdd rde rdf rdh rdr re- rec red ree ref reh rer rfc rfd rfe rff rfh rfr rh- rhc rhd rhe rhf rhh rhr rrc rrd rrf rrh rrr