-er c-- ccc ccd cce ccp ccr ccz cdc cdd cde cdp cdr cdz ce- cec ced cee cep cer cez cpc cpd cpe cpp cpr cpz crc crd cre crp crr crz cz- czc czd cze dcc dcd dce dcp dcr ddc ddd dde ddp ddr ddz de- dec ded dee dep der dez dpc dpd dpe dpp dpr dpz drc drd dre drp drr drz dzd dze dzp dzr ec- ecc ecd ece ecr ed- edc edd ede edp edr eec eed eee eep eer ep- epc epd epe epp epr epz erc erd ere erp err erz eze ezr ezz p-p pcc pcd pce pcp pcr pdc pdd pde pdp pdr pdz pec ped pee pep per pez ppc ppd ppe ppp ppr ppz prc prd pre prp prr prz pzc pzp rcc rcd rce rcp rcr rdc rdd rde rdp rdr re- rec red ree rep rer rez rpc rpd rpe rpp rpr rpz rrc rrd rrp rrr rze zce zec zed zee zep zer zez zpc zpe zpp zpr zrp zzr zzz