-er ddd dde ddh ddo ddp ddr de- ded dee deh deo dep der dh- dhd dhe dhh dho dhp dhr dod doe doh doo dop dor dpd dpe dph dpo dpp dpr drd dre dro drp drr ed- edd ede edh edo edp edr eed eee eeo eep eer ehd ehe ehh eho ehp ehr eo- eod eoe eoh eoo eop eor ep- epd epe eph epo epp epr erd ere erh ero erp err hdd hde hdh hdo hdp hdr he- hed hee heh heo hep her hhd hhe hhh hho hhp hhr hod hoe hoh hoo hop hor hpd hpe hph hpo hpp hpr hr- hrd hre hrh hro hrp hrr odd ode odh odo odp odr oed oee oeh oeo oep oer ohd ohe ohh oho ohp ohr oo- ood ooh ooo oop oor op- opd ope oph opo opp opr or- ord ore orh oro orp orr p-p pdd pde pdh pdo pdp pdr ped pee peh peo pep per phd phe pho php phr pod poe poh poo pop por ppd ppe pph ppo ppp ppr prd pre prh pro prp prr rdd rde rdh rdo rdp rdr re- red ree reh reo rep rer rh- rhd rhe rhh rho rhp rhr rod roe roh roo rop ror rpd rpe rph rpo rpp rpr rrd rrh rrp rrr