-er -ol ddd dde ddf ddi ddk ddl ddo ddr ddt de- ded dee def dei dek del deo der det dfd dfe dff dfi dfk dfl dfo dfr dft di- did die dif dii dik dil dio dir dit dke dki dkk dkl dko dkr dkt dl- dld dle dlf dli dlk dll dlo dlr dlt dod doe dof doi dok dol doo dor dot drd dre dri drk drl dro drr drt dtd dte dtf dti dtk dtl dto dtr dtt ed- edd ede edf edi edk edl edo edr edt eed eee eef eek eel eeo eer eet ef- efd efe eff efi efl efo efr eft eid eie eif eii eik eil eio eir eit ekd eke ekf eki ekl eko ekr ekt eld ele elf eli elk ell elo elr elt eo- eod eoe eof eoi eok eol eoo eor eot erd ere erf eri erk erl ero err ert etd ete etf eti etk etl eto etr ett fdd fde fdf fdi fdk fdl fdo fdr fdt fed fee fef fei fek fel feo fer fet ffd ffe fff ffi ffk ffl ffo ffr fft fid fie fif fii fik fil fir fit fkf fki fkk fkl fkt fld fle flf fli fll flo flr flt foe fof foi fok fol foo for fot frd fre frf fri frk frl fro frr frt ftd fte ftf fti ftk ftl fto ftr ftt i-d i-f idd ide idf idi idk idl ido idr idt ie- ied iee ief iei iek iel ier iet ifd ife iff ifi ifl ifo ifr ift iid iie iif iii iil iio iir iit ike ikf iki ikk ikl iko ikr ikt il- ild ile ilf ili ilk ill ilo ilr ilt io- iod ioe iof ioi iol ioo ior iot ir- ird ire irf iri irk irl iro irr irt itd ite itf iti itk itl ito itt k-t kde kdf kdk kdl kdo kdr kdt ke- ked kee kef kei kek kel keo ker ket kfd kff kfi kfo kid kie kif kii kik kil kio kir kit kke kki kkk kkl kkr kkt kl- kld klf kli klo klr klt kod koe kof koi kok kol koo kor kot krd krf kri krk krl kro krr krt kte ktf ktk ktl kto ktr ktt ldd lde ldf ldi ldk ldl ldo ldr ldt led lee lef lei lek lel leo ler let lfd lfe lff lfi lfk lfl lfo lfr lft lid lie lif lii lik lil lio lir lit lkl lkr lkt lld lle llf lli llk lll llo llr llt lod loe lof loi lok lol loo lor lot lrd lrf lri lrk lro lrr lrt ltd lte ltf lti ltk ltl lto ltr ltt o-i odd ode odf odi odl odo odr odt oed oee oef oei oel oeo oer oet of- ofd ofe off ofi ofl ofo ofr oft oid oie oif oii oik oil oio oir oit okd oke oki okk okl oko okr old ole olf oli olk oll olo olt oo- ood oof ooi ook ool ooo oor oot or- ord ore orf ori ork orl oro orr ort ot- otd ote otf oti otk otl oto otr ott rdd rde rdf rdi rdl rdo rdr rdt re- red ree ref rei rek rel reo rer ret rfd rfe rff rfi rfk rfl rfo rfr rft rid rie rif rii rik ril rio rir rit rke rkf rkk rko rkt rld rle rlf rli rll rlo rlr rlt rod roe rof roi rok rol roo ror rot rrd rrf rri rrk rrl rrr rrt rtd rte rtf rti rtk rtl rto rtr rtt tdd tde tdf tdi tdk tdl tdo tdr tdt te- ted tee tef tei tek tel teo ter tet tfd tfe tff tfi tfk tfl tfo tfr tft tid tie tif tii tik til tio tir tit tke tkk tkl tko tkr tkt tld tle tlf tli tlk tll tlo tlr tlt to- tod toe tof toi tok tol too tor tot trd tre trf tri trk trl tro trr trt ttd tte ttf tti ttk ttl tto ttr ttt