-er ddd dde ddf ddi ddk ddn ddo ddr dds ddt de- ded dee def dei dek den deo der des det dfd dfe dff dfi dfk dfn dfo dfr dfs dft di- did die dif dii dik din dio dir dis dit dke dki dkk dko dkr dks dkt dnd dne dnf dni dnk dnn dno dnr dns dnt dod doe dof doi dok don doo dor dos dot drd dre dri drk drn dro drr drs drt dsd dse dsf dsi dsk dsn dso dsr dss dst dtd dte dtf dti dtk dtn dto dtr dts dtt ed- edd ede edf edi edk edn edo edr eds edt eed eee eef eek een eeo eer ees eet ef- efd efe eff efi efo efr efs eft eid eie eif eii eik ein eio eir eis eit ekd eke ekf eki eko ekr eks ekt en- end ene enf eni enk enn eno enr ens ent eo- eod eoe eof eoi eok eon eoo eor eos eot erd ere erf eri erk ern ero err ers ert es- esd ese esf esi esk esn eso esr ess est etd ete etf eti etk etn eto etr ets ett fdd fde fdf fdi fdk fdn fdo fdr fds fdt fed fee fef fei fek fen feo fer fes fet ffd ffe fff ffi ffk ffn ffo ffr ffs fft fid fie fif fii fik fin fir fis fit fkf fki fkk fkt fnd fne fnf fni fnk fnn fnr fns fnt foe fof foi fok fon foo for fos fot frd fre frf fri frk frn fro frr frs frt fsd fse fsf fsi fsk fsn fso fsr fss fst ftd fte ftf fti ftk ftn fto ftr fts ftt i-d i-f idd ide idf idi idk idn ido idr ids idt ie- ied iee ief iei iek ien ier ies iet ifd ife iff ifi ifn ifo ifr ifs ift iid iie iif iii iin iio iir iis iit ike ikf iki ikk iko ikr iks ikt in- ind ine inf ini ink inn ino inr ins int io- iod ioe iof ioi ion ioo ior ios iot ir- ird ire irf iri irk irn iro irr irs irt is- isd ise isf isi isk isn iso isr iss ist itd ite itf iti itk itn ito its itt k-t kde kdf kdk kdo kdr kds kdt ke- ked kee kef kei kek ken keo ker kes ket kfd kff kfi kfo kfs kid kie kif kii kik kin kio kir kis kit kke kki kkk kkn kkr kks kkt kn- knd kne knf kni knk knn kno knr knt kod koe kof koi kok kon koo kor kos kot krd krf kri krk krn kro krr krs krt ksd kse ksf ksi ksk ksn kso ksr kss kst kte ktf ktk ktn kto ktr kts ktt n-i ndd nde ndf ndi ndk ndn ndo ndr nds ndt ne- ned nee nef nei nek nen neo ner nes net nfd nfe nff nfi nfk nfn nfo nfr nfs nft nid nie nif nii nik nin nio nir nis nit nke nkf nki nkk nkn nko nkr nks nkt nne nnf nni nnk nnn nno nns nnt no- nod noe nof noi nok non noo nor nos not nrd nre nrf nri nrk nrn nro nrr nrs nrt nsd nse nsf nsi nsk nsn nso nsr nss nst ntd nte ntf nti ntk ntn nto ntr nts ntt o-i odd ode odf odi odn odo odr ods odt oed oee oef oei oen oeo oer oes oet of- ofd ofe off ofi ofn ofo ofr ofs oft oid oie oif oii oik oin oio oir ois oit okd oke oki okk oko okr oks on- ond one onf oni onk onn ono onr ons ont oo- ood oof ooi ook oon ooo oor oos oot or- ord ore orf ori ork orn oro orr ors ort os- osd ose osf osi osk osn oso osr oss ost ot- otd ote otf oti otk otn oto otr ots ott rdd rde rdf rdi rdn rdo rdr rds rdt re- red ree ref rei rek ren reo rer res ret rfd rfe rff rfi rfk rfn rfo rfr rfs rft rid rie rif rii rik rin rio rir ris rit rke rkf rkk rko rks rkt rnd rni rnn rno rnr rns rnt rod roe rof roi rok ron roo ror ros rot rrd rrf rri rrk rrn rrr rrs rrt rsd rse rsf rsi rsk rsn rso rsr rss rst rtd rte rtf rti rtk rtn rto rtr rts rtt sdd sde sdf sdi sdk sdn sdo sdr sds sdt se- sed see sef sei sek sen seo ser ses set sfd sfe sff sfi sfk sfn sfo sfr sfs sft sid sie sif sii sik sin sio sir sis sit sk- skd ske skf ski skk sko skr sks skt snd sne snf sni snk snn sno snr sns snt sod soe sof soi sok son soo sor sos sot sr- srd sre srf sri srk srn sro srr srs srt ss- ssd sse ssf ssi ssk ssn sso ssr sss sst std ste stf sti stk stn sto str sts stt tdd tde tdf tdi tdk tdn tdo tdr tds tdt te- ted tee tef tei tek ten teo ter tes tet tfd tfe tff tfi tfk tfn tfo tfr tfs tft tid tie tif tii tik tin tio tir tis tit tke tkk tko tkr tks tkt tnd tne tnf tni tnk tnn tno tnr tns tnt to- tod toe tof toi tok ton too tor tos tot trd tre trf tri trk trn tro trr trs trt tsd tse tsf tsi tsk tsn tso tsr tss tst ttd tte ttf tti ttk ttn tto ttr tts ttt