-er ddd dde ddh ddn ddo ddr de- ded dee deh den deo der dh- dhd dhe dhh dho dhr dnd dne dnh dnn dno dnr dod doe doh don doo dor drd dre drn dro drr ed- edd ede edh edn edo edr eed eee een eeo eer ehd ehe ehh ehn eho ehr en- end ene enh enn eno enr eo- eod eoe eoh eon eoo eor erd ere erh ern ero err hdd hde hdh hdn hdo hdr he- hed hee heh hen heo her hhd hhe hhh hhn hho hhr hnd hne hnh hnn hno hod hoe hoh hon hoo hor hr- hrd hre hrh hrn hro hrr ndd nde ndh ndn ndo ndr ne- ned nee neh nen neo ner nhd nhe nhh nhn nhr nne nnh nnn nno no- nod noe noh non noo nor nrd nre nrn nro nrr odd ode odh odn odo odr oed oee oeh oen oeo oer ohd ohe ohh ohn oho ohr on- ond one onh onn ono onr oo- ood ooh oon ooo oor or- ord ore orh orn oro orr rdd rde rdh rdn rdo rdr re- red ree reh ren reo rer rh- rhd rhe rhh rhn rho rhr rnd rnh rnn rno rnr rod roe roh ron roo ror rrd rrh rrn rrr