-er ddd dde ddf ddi ddn ddo ddr dds ddt de- ded dee def dei den deo der des det dfd dfe dff dfi dfn dfo dfr dfs dft di- did die dif dii din dio dir dis dit dnd dne dnf dni dnn dno dnr dns dnt dod doe dof doi don doo dor dos dot drd dre dri drn dro drr drs drt dsd dse dsf dsi dsn dso dsr dss dst dtd dte dtf dti dtn dto dtr dts dtt ed- edd ede edf edi edn edo edr eds edt eed eee eef een eeo eer ees eet ef- efd efe eff efi efo efr efs eft eid eie eif eii ein eio eir eis eit en- end ene enf eni enn eno enr ens ent eo- eod eoe eof eoi eon eoo eor eos eot erd ere erf eri ern ero err ers ert es- esd ese esf esi esn eso esr ess est etd ete etf eti etn eto etr ets ett fdd fde fdf fdi fdn fdo fdr fds fdt fed fee fef fei fen feo fer fes fet ffd ffe fff ffi ffn ffo ffr ffs fft fid fie fif fii fin fir fis fit fnd fne fnf fni fnn fnr fns fnt foe fof foi fon foo for fos fot frd fre frf fri frn fro frr frs frt fsd fse fsf fsi fsn fso fsr fss fst ftd fte ftf fti ftn fto ftr fts ftt i-d i-f idd ide idf idi idn ido idr ids idt ie- ied iee ief iei ien ier ies iet ifd ife iff ifi ifn ifo ifr ifs ift iid iie iif iii iin iio iir iis iit in- ind ine inf ini inn ino inr ins int io- iod ioe iof ioi ion ioo ior ios iot ir- ird ire irf iri irn iro irr irs irt is- isd ise isf isi isn iso isr iss ist itd ite itf iti itn ito its itt n-i ndd nde ndf ndi ndn ndo ndr nds ndt ne- ned nee nef nei nen neo ner nes net nfd nfe nff nfi nfn nfo nfr nfs nft nid nie nif nii nin nio nir nis nit nne nnf nni nnn nno nns nnt no- nod noe nof noi non noo nor nos not nrd nre nrf nri nrn nro nrr nrs nrt nsd nse nsf nsi nsn nso nsr nss nst ntd nte ntf nti 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 oin oio oir ois oit on- ond one onf oni onn ono onr ons ont oo- ood oof ooi oon ooo oor oos oot or- ord ore orf ori orn oro orr ors ort os- osd ose osf osi osn oso osr oss ost ot- otd ote otf oti otn oto otr ots ott rdd rde rdf rdi rdn rdo rdr rds rdt re- red ree ref rei ren reo rer res ret rfd rfe rff rfi rfn rfo rfr rfs rft rid rie rif rii rin rio rir ris rit rnd rni rnn rno rnr rns rnt rod roe rof roi ron roo ror ros rot rrd rrf rri rrn rrr rrs rrt rsd rse rsf rsi rsn rso rsr rss rst rtd rte rtf rti rtn rto rtr rts rtt sdd sde sdf sdi sdn sdo sdr sds sdt se- sed see sef sei sen seo ser ses set sfd sfe sff sfi sfn sfo sfr sfs sft sid sie sif sii sin sio sir sis sit snd sne snf sni snn sno snr sns snt sod soe sof soi son soo sor sos sot sr- srd sre srf sri srn sro srr srs srt ss- ssd sse ssf ssi ssn sso ssr sss sst std ste stf sti stn sto str sts stt tdd tde tdf tdi tdn tdo tdr tds tdt te- ted tee tef tei ten teo ter tes tet tfd tfe tff tfi tfn tfo tfr tfs tft tid tie tif tii tin tio tir tis tit tnd tne tnf tni tnn tno tnr tns tnt to- tod toe tof toi ton too tor tos tot trd tre trf tri trn tro trr trs trt tsd tse tsf tsi tsn tso tsr tss tst ttd tte ttf tti ttn tto ttr tts ttt