eee eef eeo ees eet ef- efe eff efo efs eft eo- eoe eof eoo eoq eos eot eqe eqf eqq eqs eqt es- ese esf eso esq ess est ete etf eto ets ett fee fef feo fes fet ffe fff ffo ffs fft foe fof foo fos fot fqt fse fsf fso fsq fss fst fte ftf fto ftq fts ftt oee oef oeo oes oet of- ofe off ofo ofs oft oo- oof ooo oos oot oqo os- ose osf oso osq oss ost ot- ote otf oto ots ott qee qef qeo qet qfe qff qfs qft qof qoo qos qqq qso qst qto qtq qts se- see sef seo seq ses set sfe sff sfo sfs sft soe sof soo soq sos sot sqq sqs ss- sse ssf sso ssq sss sst ste stf sto stq sts stt te- tee tef teo teq tes tet tfe tff tfo tfs tft to- toe tof too toq tos tot tqo tse tsf tso tsq tss tst tte ttf tto tts ttt