-er ddd dde ddi ddo ddp ddr ddt ddx de- ded dee dei deo dep der det dev dex di- did die dii dio dip dir dit div dix dod doe doi doo dop dor dot dov dox dpd dpe dpi dpo dpp dpr dpt dpv drd dre dri dro drp drr drt drv drx dtd dte dti dto dtp dtr dtt dtv dtx dvd dve dvi dvp dvr dvt dvx dxd dxi dxo dxp dxr dxt dxx ed- edd ede edi edo edp edr edt edx eed eee eeo eep eer eet eev eex eid eie eii eio eip eir eit eiv eix eo- eod eoe eoi eoo eop eor eot ep- epd epe epi epo epp epr ept epx erd ere eri ero erp err ert erv etd ete eti eto etp etr ett etv etx evd eve evi evo evp evr evt evv ex- exd exe exi exo exp exr ext exx i-d i-v idd ide idi ido idp idr idt idv idx ie- ied iee iei iep ier iet iev iex iid iie iii iio iip iir iit iix io- iod ioe ioi ioo iop ior iot iov ipd ipe ipi ipo ipp ipr ipt ipv ipx ir- ird ire iri iro irp irr irt irv irx itd ite iti ito itp itt itv itx ivd ive ivi ivo ivp ivr ivt ivv ivx ixe ixi o-i odd ode odi odo odp odr odt odv oed oee oei oeo oep oer oet oex oid oie oii oio oip oir oit oiv oo- ood ooi ooo oop oor oot oov oox op- opd ope opi opo opp opr opt opv opx or- ord ore ori oro orp orr ort orv orx ot- otd ote oti oto otp otr ott otv ov- ovd ove ovi ovo ovp ovv ox- oxi oxo oxt oxx p-p pdd pde pdi pdo pdp pdr pdt pdv pdx ped pee pei peo pep per pet pev pex pid pie pii pio pip pir pit piv pix pod poe poi poo pop por pot pov pox ppd ppe ppi ppo ppp ppr ppt ppv ppx prd pre pri pro prp prr prt prv prx pt- ptd pte pti pto ptp ptr ptt ptv ptx pvd pve pvi pvo pvp pvr pvt pvv pxe pxr pxt rdd rde rdi rdo rdp rdr rdt rdv rdx re- red ree rei reo rep rer ret rev rex rid rie rii rio rip rir rit riv rix rod roe roi roo rop ror rot rov rox rpd rpe rpi rpo rpp rpr rpt rpv rpx rrd rri rrp rrr rrt rtd rte rti rto rtp rtr rtt rtv rtx rvd rve rvi rvo rvp rvr rvt rvv rxp rxr t-x tdd tde tdi tdo tdp tdr tdt tdv tdx te- ted tee tei teo tep ter tet tev tex tid tie tii tio tip tir tit tiv tix to- tod toe toi too top tor tot tov tox tpd tpe tpi tpo tpp tpr tpt tpv tpx trd tre tri tro trp trr trt trv trx ttd tte tti tto ttp ttr ttt ttv ttx tvd tve tvi tvo tvp tvr tvt tvx txe txi txt v-e vdd vde vdi vdo vdp vdr vdt vdv vdx ved vee vei veo vep ver vet vex vi- vid vie vii vio vip vir vit viv vix vod voe voi voo vop vor vot vov vox vpd vpe vpi vpo vpp vpr vpt vpx vrd vre vri vrp vrr vrt vte vti vto vtr vtt vtv vtx vvi vvo vvr vvt vvv vxd vxr vxv xde xdi xdr xdt xdv xed xee xep xer xet xev xex xie xii xio xit xiv xix xod xoi xoo xop xor xot xov xox xpd xpe xpo xpp xpt xrd xrt xrx xti xtp xtr xtv xtx xvi xvt xxi xxo xxp xxv xxx