-er -ey ddd dde ddk ddp ddr ddy de- ded dee dek dep der dey dke dkk dkp dkr dpd dpe dpk dpp dpr drd dre drk drp drr dry dy- dyd dye dyk dyp dyr dyy ed- edd ede edk edp edr edy eed eee eek eep eer eey ekd eke ekp ekr eky ep- epd epe epp epr erd ere erk erp err ery eyd eye eyp eyr kde kdk kdp kdr kdy ke- ked kee kek kep ker key kke kkk kkp kkr kky kpd kpe kpk kpp kpr krd krk krp krr kry kyd kye kyp kyr p-p pdd pde pdk pdp pdr ped pee pek pep per pey pkd pke pkp pkr pky ppd ppe ppk ppp ppr prd pre prk prp prr pry py- pyd pye pyk pyr rdd rde rdp rdr rdy re- red ree rek rep rer rey rke rkk rkp rky rpd rpe rpk rpp rpr rrd rrk rrp rrr ry- ryd rye ryk ryr ryy yde ydy yed yee yek yep yer yey ykk ypd yre yrp yye yyy