-er ddd dde ddh ddp ddr de- ded dee deh dep der dh- dhd dhe dhh dhp dhr dpd dpe dph dpp dpr drd dre drp drr ed- edd ede edh edp edr eed eee eep eer ehd ehe ehh ehp ehr ep- epd epe eph epp epr erd ere erh erp err hdd hde hdh hdp hdr he- hed hee heh hep her hhd hhe hhh hhp hhr hpd hpe hph hpp hpr hr- hrd hre hrh hrp hrr p-p pdd pde pdh pdp pdr ped pee peh pep per phd phe php phr ppd ppe pph ppp ppr prd pre prh prp prr rdd rde rdh rdp rdr re- red ree reh rep rer rh- rhd rhe rhh rhp rhr rpd rpe rph rpp rpr rrd rrh rrp rrr