-er -th eee eef eek eeo eer ees eet ef- efe eff efh efo efr efs eft ehe ehf ehh eho ehr ehs eht eke ekf ekh eko ekr eks ekt eo- eoe eof eoh eok eoo eor eos eot ere erf erh erk ero err ers ert es- ese esf esh esk eso esr ess est ete etf eth etk eto etr ets ett fee fef feh fek feo fer fes fet ffe fff ffh ffk ffo ffr ffs fft fhe fhf fhh fho fhr fhs fkf fkk fkt foe fof foh fok foo for fos fot fre frf frh frk fro frr frs frt fse fsf fsh fsk fso fsr fss fst fte ftf fth ftk fto ftr fts ftt he- hee hef heh hek heo her hes het hfe hff hfh hfk hfo hfr hfs hft hhe hhf hhh hhk hho hhr hhs hht hkf hkh hkk hko hkr hks hkt hoe hof hoh hok hoo hor hos hot hr- hre hrf hrh hrk hro hrr hrs hrt hse hsf hsh hsk hsr hss hst hte htf hth htk hto htr hts htt k-t ke- kee kef keh kek keo ker kes ket kff kfh kfo kfs khe khf khh khk kho khr khs kke kkh kkk kkr kks kkt koe kof koh kok koo kor kos kot krf krk kro krr krs krt kse ksf ksh ksk kso ksr kss kst kte ktf kth ktk kto ktr kts ktt oee oef oeh oeo oer oes oet of- ofe off ofo ofr ofs oft ohe ohf ohh oho ohr ohs oht oke okk oko okr oks oo- oof ooh ook ooo oor oos oot or- ore orf orh ork oro orr ors ort os- ose osf osh osk oso osr oss ost ot- ote otf oth otk oto otr ots ott re- ree ref reh rek reo rer res ret rfe rff rfh rfk rfo rfr rfs rft rh- rhe rhf rhh rho rhr rhs rht rke rkf rkk rko rks rkt roe rof roh rok roo ror ros rot rrf rrh rrk rrr rrs rrt rse rsf rsh rsk rso rsr rss rst rte rtf rtk rto rtr rts rtt se- see sef seh sek seo ser ses set sfe sff sfh sfk sfo sfr sfs sft sh- she shf shh shk sho shr shs sht sk- ske skf skh skk sko skr sks skt soe sof soh sok soo sor sos sot sr- sre srf srh srk sro srr srs srt ss- sse ssf ssh ssk sso ssr sss sst ste stf sth stk sto str sts stt te- tee tef teh tek teo ter tes tet tfe tff tfh tfk tfo tfr tfs tft th- the thf thh thk tho thr ths tht tke tkk tko tkr tks tkt to- toe tof toh tok too tor tos tot tre trf trh trk tro trr trs trt tse tsf tsh tsk tso tsr tss tst tte ttf tth ttk tto ttr tts ttt