-er ddd dde ddh ddo ddp ddr dds de- ded dee deh deo dep der des dh- dhd dhe dhh dho dhp dhr dhs dod doe doh doo dop dor dos dpd dpe dph dpo dpp dpr dps drd dre dro drp drr drs dsd dse dsh dso dsp dsr dss ed- edd ede edh edo edp edr eds eed eee eeo eep eer ees ehd ehe ehh eho ehp ehr ehs eo- eod eoe eoh eoo eop eor eos ep- epd epe eph epo epp epr eps erd ere erh ero erp err ers es- esd ese esh eso esp esr ess hdd hde hdh hdo hdp hdr hds he- hed hee heh heo hep her hes hhd hhe hhh hho hhp hhr hhs hod hoe hoh hoo hop hor hos hpd hpe hph hpo hpp hpr hps hr- hrd hre hrh hro hrp hrr hrs hsd hse hsh hsp hsr hss odd ode odh odo odp odr ods oed oee oeh oeo oep oer oes ohd ohe ohh oho ohp ohr ohs oo- ood ooh ooo oop oor oos op- opd ope oph opo opp opr ops or- ord ore orh oro orp orr ors os- osd ose osh oso osp osr oss p-p pdd pde pdh pdo pdp pdr pds ped pee peh peo pep per pes phd phe pho php phr phs pod poe poh poo pop por pos ppd ppe pph ppo ppp ppr pps prd pre prh pro prp prr prs ps- psd pse psh pso psp psr pss rdd rde rdh rdo rdp rdr rds re- red ree reh reo rep rer res rh- rhd rhe rhh rho rhp rhr rhs rod roe roh roo rop ror ros rpd rpe rph rpo rpp rpr rps rrd rrh rrp rrr rrs rsd rse rsh rso rsp rsr rss sdd sde sdh sdo sdp sdr sds se- sed see seh seo sep ser ses sh- shd she shh sho shp shr shs sod soe soh soo sop sor sos spd spe sph spo spp spr sps sr- srd sre srh sro srp srr srs ss- ssd sse ssh sso ssp ssr sss