ddd ddh ddo ddp ddr dh- dhd dhh dho dhp dhr dod doh doo dop dor dpd dph dpo dpp dpr drd dro drp drr hdd hdh hdo hdp hdr hhd hhh hho hhp hhr hod hoh hoo hop hor hpd hph hpo hpp hpr hr- hrd hrh hro hrp hrr odd odh odo odp odr ohd ohh oho ohp ohr oo- ood ooh ooo oop oor op- opd oph opo opp opr or- ord orh oro orp orr p-p pdd pdh pdo pdp pdr phd pho php phr pod poh poo pop por ppd pph ppo ppp ppr prd prh pro prp prr rdd rdh rdo rdp rdr rh- rhd rhh rho rhp rhr rod roh roo rop ror rpd rph rpo rpp rpr rrd rrh rrp rrr