-er c-- ccc ccd cce cch ccr ccu cdc cdd cde cdh cdr cdu ce- cec ced cee ceh cer ceu ch- chc chd che chh chr chu crc crd cre crh crr cru cuc cud cue cuh cur cuu dcc dcd dce dcr dcu ddc ddd dde ddh ddr ddu de- dec ded dee deh der deu dh- dhc dhd dhe dhh dhr dhu drc drd dre drr dru duc dud due duh dur ec- ecc ecd ece ech ecr ecu ed- edc edd ede edh edr edu eec eed eee eer ehc ehd ehe ehh ehr ehu erc erd ere erh err eru eu- euc eud eue eur hcc hcd hce hch hcr hdc hdd hde hdh hdr hdu he- hec hed hee heh her heu hhc hhd hhe hhh hhr hhu hr- hrc hrd hre hrh hrr hru huc hud hue huh hur huu rcc rcd rce rch rcr rcu rdc rdd rde rdh rdr rdu re- rec red ree reh rer reu rh- rhc rhd rhe rhh rhr rhu rrc rrd rrh rrr rru ruc rud rue ruh rur ruu ucc ucd uce uch ucr ucu udc udd ude udr udu uec ued uee ueh uer uhc uhd uhe uhh uhr uhu ur- urc urd ure urr uru uuc uue uur uuu