-er -ol -th ddd dde ddf ddh ddk ddl ddo ddr ddt de- ded dee def deh dek del deo der det dfd dfe dff dfh dfk dfl dfo dfr dft dh- dhd dhe dhf dhh dhk dhl dho dhr dht dke dkk dkl dko dkr dkt dl- dld dle dlf dlh dlk dll dlo dlr dlt dod doe dof doh dok dol doo dor dot drd dre drk drl dro drr drt dtd dte dtf dth dtk dtl dto dtr dtt ed- edd ede edf edh edk edl edo edr edt eed eee eef eek eel eeo eer eet ef- efd efe eff efh efl efo efr eft ehd ehe ehf ehh ehl eho ehr eht ekd eke ekf ekh ekl eko ekr ekt eld ele elf elh elk ell elo elr elt eo- eod eoe eof eoh eok eol eoo eor eot erd ere erf erh erk erl ero err ert etd ete etf eth etk etl eto etr ett fdd fde fdf fdh fdk fdl fdo fdr fdt fed fee fef feh fek fel feo fer fet ffd ffe fff ffh ffk ffl ffo ffr fft fhe fhf fhh fhl fho fhr fkf fkk fkl fkt fld fle flf fll flo flr flt foe fof foh fok fol foo for fot frd fre frf frh frk frl fro frr frt ftd fte ftf fth ftk ftl fto ftr ftt hdd hde hdf hdh hdk hdl hdo hdr hdt he- hed hee hef heh hek hel heo her het hfd hfe hff hfh hfk hfl hfo hfr hft hhd hhe hhf hhh hhk hhl hho hhr hht hkd hkf hkh hkk hkl hko hkr hkt hld hle hlf hlh hll hlo hlr hlt hod hoe hof hoh hok hol hoo hor hot hr- hrd hre hrf hrh hrk hrl hro hrr hrt htd hte htf hth htk htl hto htr htt k-t kde kdf kdh kdk kdl kdo kdr kdt ke- ked kee kef keh kek kel keo ker ket kfd kff kfh kfo khe khf khh khk kho khr kke kkh kkk kkl kkr kkt kl- kld klf klh klo klr klt kod koe kof koh kok kol koo kor kot krd krf krk krl kro krr krt kte ktf kth ktk ktl kto ktr ktt ldd lde ldf ldh ldk ldl ldo ldr ldt led lee lef leh lek lel leo ler let lfd lfe lff lfh lfk lfl lfo lfr lft lhd lhf lhh lhk lho lhr lht lkh lkl lkr lkt lld lle llf llk lll llo llr llt lod loe lof loh lok lol loo lor lot lrd lrf lrh lrk lro lrr lrt ltd lte ltf lth ltk ltl lto ltr ltt odd ode odf odh odl odo odr odt oed oee oef oeh oel oeo oer oet of- ofd ofe off ofl ofo ofr oft ohd ohe ohf ohh ohl oho ohr oht okd oke okk okl oko okr old ole olf olk oll olo olt oo- ood oof ooh ook ool ooo oor oot or- ord ore orf orh ork orl oro orr ort ot- otd ote otf oth otk otl oto otr ott rdd rde rdf rdh rdl rdo rdr rdt re- red ree ref reh rek rel reo rer ret rfd rfe rff rfh rfk rfl rfo rfr rft rh- rhd rhe rhf rhh rhl rho rhr rht rke rkf rkk rko rkt rld rle rlf rlh rll rlo rlr rlt rod roe rof roh rok rol roo ror rot rrd rrf rrh rrk rrl rrr rrt rtd rte rtf rtk rtl rto rtr rtt tdd tde tdf tdh tdk tdl tdo tdr tdt te- ted tee tef teh tek tel teo ter tet tfd tfe tff tfh tfk tfl tfo tfr tft th- thd the thf thh thk thl tho thr tht tke tkk tkl tko tkr tkt tld tle tlf tlh tlk tll tlo tlr tlt to- tod toe tof toh tok tol too tor tot trd tre trf trh trk trl tro trr trt ttd tte ttf tth ttk ttl tto ttr ttt