-er -ey ddd dde ddf ddi ddp ddr ddt ddy de- ded dee def dei dep der det dey dfd dfe dff dfi dfp dfr dft di- did die dif dii dip dir dit diy dpd dpe dpf dpi dpp dpr dpt drd dre dri drp drr drt dry dtd dte dtf dti dtp dtr dtt dty dy- dyd dye dyp dyr dyy ed- edd ede edf edi edp edr edt edy eed eee eef eep eer eet eey ef- efd efe eff efi efp efr eft eid eie eif eii eip eir eit ep- epd epe epf epi epp epr ept erd ere erf eri erp err ert ery etd ete etf eti etp etr ett ety eyd eye eyp eyr eyt fdd fde fdf fdi fdp fdr fdt fed fee fef fei fep fer fet fey ffd ffe fff ffi ffp ffr fft ffy fid fie fif fii fip fir fit fpd fpe fpi fpp fpr fpt fpy frd fre frf fri frp frr frt fry ftd fte ftf fti ftp ftr ftt fty fy- fye fyi fyp i-d i-f idd ide idf idi idp idr idt idy ie- ied iee ief iei iep ier iet iey ifd ife iff ifi ifp ifr ift ify iid iie iif iii iip iir iit ipd ipe ipf ipi ipp ipr ipt ipy ir- ird ire irf iri irp irr irt iry itd ite itf iti itp itt ity iye iyr iyt iyy p-p pdd pde pdf pdi pdp pdr pdt ped pee pef pei pep per pet pey pfd pfe pff pfi pfp pfr pft pfy pid pie pif pii pip pir pit ppd ppe ppf ppi ppp ppr ppt prd pre prf pri prp prr prt pry pt- ptd pte ptf pti ptp ptr ptt pty py- pyd pye pyf pyr pyt rdd rde rdf rdi rdp rdr rdt rdy re- red ree ref rei rep rer ret rey rfd rfe rff rfi rfp rfr rft rid rie rif rii rip rir rit riy rpd rpe rpf rpi rpp rpr rpt rrd rrf rri rrp rrr rrt rtd rte rtf rti rtp rtr rtt rty ry- ryd rye ryf ryr ryy tdd tde tdf tdi tdp tdr tdt tdy te- ted tee tef tei tep ter tet tey tfd tfe tff tfi tfp tfr tft tid tie tif tii tip tir tit tiy tpd tpe tpf tpi tpp tpr tpt trd tre trf tri trp trr trt try ttd tte ttf tti ttp ttr ttt tty tyd tye tyf typ tyr tyt yde ydt ydy yed yee yef yei yep yer yet yey yfd yfe yff yfr yft yid yie yif yii yip yir yit ypd ypf yre yrf yrp yrt ytd yte ytf ytp ytr ytt yye yyf yyt yyy