-er -ey ddd dde ddi ddp ddr ddt ddx ddy de- ded dee dei dep der det dex dey di- did die dii dip dir dit dix diy dpd dpe dpi dpp dpr dpt drd dre dri drp drr drt drx dry dtd dte dti dtp dtr dtt dtx dty dxd dxi dxp dxr dxt dxx dy- dyd dye dyp dyr dyy ed- edd ede edi edp edr edt edx edy eed eee eep eer eet eex eey eid eie eii eip eir eit eix ep- epd epe epi epp epr ept epx erd ere eri erp err ert ery etd ete eti etp etr ett etx ety ex- exd exe exi exp exr ext exx exy eyd eye eyp eyr eyt i-d idd ide idi idp idr idt idx idy ie- ied iee iei iep ier iet iex iey iid iie iii iip iir iit iix ipd ipe ipi ipp ipr ipt ipx ipy ir- ird ire iri irp irr irt irx iry itd ite iti itp itt itx ity ixe ixi ixy iye iyr iyt iyy p-p pdd pde pdi pdp pdr pdt pdx ped pee pei pep per pet pex pey pid pie pii pip pir pit pix ppd ppe ppi ppp ppr ppt ppx prd pre pri prp prr prt prx pry pt- ptd pte pti ptp ptr ptt ptx pty pxe pxr pxt py- pyd pye pyr pyt pyx rdd rde rdi rdp rdr rdt rdx rdy re- red ree rei rep rer ret rex rey rid rie rii rip rir rit rix riy rpd rpe rpi rpp rpr rpt rpx rrd rri rrp rrr rrt rtd rte rti rtp rtr rtt rtx rty rxp rxr ry- ryd rye ryr ryy t-x tdd tde tdi tdp tdr tdt tdx tdy te- ted tee tei tep ter tet tex tey tid tie tii tip tir tit tix tiy tpd tpe tpi tpp tpr tpt tpx trd tre tri trp trr trt trx try ttd tte tti ttp ttr ttt ttx tty txe txi txt tyd tye typ tyr tyt xde xdi xdr xdt xed xee xep xer xet xex xie xii xit xix xpd xpe xpp xpt xrd xrt xrx xry xti xtp xtr xtx xty xxi xxp xxx xxy xyp xyr xyy yde ydt ydy yed yee yei yep yer yet yex yey yid yie yii yip yir yit ypd yre yrp yrt ytd yte ytp ytr ytt yxe yxy yye yyt yyy