-er ddd dde ddi ddm ddo ddr ddt ddx de- ded dee dei dem deo der det dex di- did die dii dim dio dir dit dix dmd dme dmi dmm dmo dmr dmt dmx dod doe doi dom doo dor dot dox drd dre dri drm dro drr drt drx dtd dte dti dtm dto dtr dtt dtx dxd dxi dxo dxr dxt dxx ed- edd ede edi edm edo edr edt edx eed eee eem eeo eer eet eex eid eie eii eim eio eir eit eix em- emd eme emi emm emo emr emt emx eo- eod eoe eoi eom eoo eor eot erd ere eri erm ero err ert etd ete eti etm eto etr ett etx ex- exd exe exi exo exr ext exx i-d idd ide idi idm ido idr idt idx ie- ied iee iei iem ier iet iex iid iie iii iim iio iir iit iix im- imd ime imi imm imo imt imx io- iod ioe ioi iom ioo ior iot ir- ird ire iri irm iro irr irt irx itd ite iti itm ito itt itx ixe ixi m-o m-r mdd mde mdi mdm mdo mdr mdt mdx med mee mei mem meo mer met mex mi- mid mie mii mim mio mir mit mix mmd mme mmi mmm mmo mmr mmt mmx mod moe moi mom moo mor mot mox mrd mre mri mrm mro mrr mrt mrx mtd mte mti mtm mto mtr mtt mtx mxd mxi mxr o-i odd ode odi odm odo odr odt oed oee oei oem oeo oer oet oex oid oie oii oim oio oir oit om- omd ome omi omm omo omr omt omx oo- ood ooi oom ooo oor oot oox or- ord ore ori orm oro orr ort orx ot- otd ote oti otm oto otr ott ox- oxi oxo oxt oxx rdd rde rdi rdm rdo rdr rdt rdx re- red ree rei rem reo rer ret rex rid rie rii rim rio rir rit rix rmd rme rmi rmm rmo rmr rmt rmx rod roe roi rom roo ror rot rox rrd rri rrm rrr rrt rtd rte rti rtm rto rtr rtt rtx rxr t-x tdd tde tdi tdm tdo tdr tdt tdx te- ted tee tei tem teo ter tet tex tid tie tii tim tio tir tit tix tmd tme tmi tmm tmo tmr tmt tmx to- tod toe toi tom too tor tot tox trd tre tri trm tro trr trt trx ttd tte tti ttm tto ttr ttt ttx txe txi txt xde xdi xdm xdr xdt xed xee xem xer xet xex xie xii xio xit xix xmd xmi xmm xmo xmr xmt xmx xod xoi xom xoo xor xot xox xrd xrt xrx xti xtm xtr xtx xxi xxo xxx