-er -ol ddd dde ddf ddk ddl ddo ddr ddt de- ded dee def dek del deo der det dfd dfe dff dfk dfl dfo dfr dft dke dkk dkl dko dkr dkt dl- dld dle dlf dlk dll dlo dlr dlt dod doe dof dok dol doo dor dot drd dre drk drl dro drr drt dtd dte dtf dtk dtl dto dtr dtt ed- edd ede edf edk edl edo edr edt eed eee eef eek eel eeo eer eet ef- efd efe eff efl efo efr eft ekd eke ekf ekl eko ekr ekt eld ele elf elk ell elo elr elt eo- eod eoe eof eok eol eoo eor eot erd ere erf erk erl ero err ert etd ete etf etk etl eto etr ett fdd fde fdf fdk fdl fdo fdr fdt fed fee fef fek fel feo fer fet ffd ffe fff ffk ffl ffo ffr fft fkf fkk fkl fkt fld fle flf fll flo flr flt foe fof fok fol foo for fot frd fre frf frk frl fro frr frt ftd fte ftf ftk ftl fto ftr ftt k-t kde kdf kdk kdl kdo kdr kdt ke- ked kee kef kek kel keo ker ket kfd kff kfo kke kkk kkl kkr kkt kl- kld klf klo klr klt kod koe kof kok kol koo kor kot krd krf krk krl kro krr krt kte ktf ktk ktl kto ktr ktt ldd lde ldf ldk ldl ldo ldr ldt led lee lef lek lel leo ler let lfd lfe lff lfk lfl lfo lfr lft lkl lkr lkt lld lle llf llk lll llo llr llt lod loe lof lok lol loo lor lot lrd lrf lrk lro lrr lrt ltd lte ltf ltk ltl lto ltr ltt odd ode odf odl odo odr odt oed oee oef oel oeo oer oet of- ofd ofe off ofl ofo ofr oft okd oke okk okl oko okr old ole olf olk oll olo olt oo- ood oof ook ool ooo oor oot or- ord ore orf ork orl oro orr ort ot- otd ote otf otk otl oto otr ott rdd rde rdf rdl rdo rdr rdt re- red ree ref rek rel reo rer ret rfd rfe rff rfk rfl rfo rfr rft rke rkf rkk rko rkt rld rle rlf rll rlo rlr rlt rod roe rof rok rol roo ror rot rrd rrf rrk rrl rrr rrt rtd rte rtf rtk rtl rto rtr rtt tdd tde tdf tdk tdl tdo tdr tdt te- ted tee tef tek tel teo ter tet tfd tfe tff tfk tfl tfo tfr tft tke tkk tkl tko tkr tkt tld tle tlf tlk tll tlo tlr tlt to- tod toe tof tok tol too tor tot trd tre trf trk trl tro trr trt ttd tte ttf ttk ttl tto ttr ttt