-er -ol eee eef eel eeo eer eet eex ef- efe eff efi efl efo efr eft efx eie eif eii eil eio eir eit eix ele elf eli ell elo elr elt elx eo- eoe eof eoi eol eoo eor eot ere erf eri erl ero err ert ete etf eti etl eto etr ett etx ex- exe exi exl exo exr ext exx fee fef fei fel feo fer fet fex ffe fff ffi ffl ffo ffr fft ffx fie fif fii fil fir fit fix fle flf fli fll flo flr flt flx foe fof foi fol foo for fot fox fre frf fri frl fro frr frt fte ftf fti ftl fto ftr ftt ftx fxe fxi fxr fxt fxx i-f ie- iee ief iei iel ier iet iex ife iff ifi ifl ifo ifr ift ifx iie iif iii iil iio iir iit iix il- ile ilf ili ill ilo ilr ilt ilx io- ioe iof ioi iol ioo ior iot ir- ire irf iri irl iro irr irt irx ite itf iti itl ito itt itx ixe ixi ixl lee lef lei lel leo ler let lex lfe lff lfi lfl lfo lfr lft lfx lie lif lii lil lio lir lit lix lle llf lli lll llo llr llt loe lof loi lol loo lor lot lox lrf lri lro lrr lrt lte ltf lti ltl lto ltr ltt ltx lxi lxo lxr lxx o-i oee oef oei oel oeo oer oet oex of- ofe off ofi ofl ofo ofr oft ofx oie oif oii oil oio oir oit ole olf oli oll olo olt oo- oof ooi ool ooo oor oot oox or- ore orf ori orl oro orr ort orx ot- ote otf oti otl oto otr ott ox- oxf oxi oxo oxt oxx re- ree ref rei rel reo rer ret rex rfe rff rfi rfl rfo rfr rft rie rif rii ril rio rir rit rix rle rlf rli rll rlo rlr rlt roe rof roi rol roo ror rot rox rrf rri rrl rrr rrt rte rtf rti rtl rto rtr rtt rtx rxr t-x te- tee tef tei tel teo ter tet tex tfe tff tfi tfl tfo tfr tft tfx tie tif tii til tio tir tit tix tle tlf tli tll tlo tlr tlt tlx to- toe tof toi tol too tor tot tox tre trf tri trl tro trr trt trx tte ttf tti ttl tto ttr ttt ttx txe txf txi txl txt xee xel xer xet xex xfe xfl xft xfx xie xii xio xit xix xlf xli xlr xlt xof xoi xoo xor xot xox xrf xrt xrx xtf xti xtr xtx xxi xxl xxo xxx