-er -ol eee eel eeo eer eex eie eii eil eio eir eix ele eli ell elo elr elx eo- eoe eoi eol eoo eor ere eri erl ero err ex- exe exi exl exo exr exx ie- iee iei iel ier iex iie iii iil iio iir iix il- ile ili ill ilo ilr ilx io- ioe ioi iol ioo ior ir- ire iri irl iro irr irx ixe ixi ixl lee lei lel leo ler lex lie lii lil lio lir lix lle lli lll llo llr loe loi lol loo lor lox lri lro lrr lxi lxo lxr lxx o-i oee oei oel oeo oer oex oie oii oil oio oir ole oli oll olo oo- ooi ool ooo oor oox or- ore ori orl oro orr orx ox- oxi oxo oxx re- ree rei rel reo rer rex rie rii ril rio rir rix rle rli rll rlo rlr roe roi rol roo ror rox rri rrl rrr rxr xee xel xer xex xie xii xio xix xli xlr xoi xoo xor xox xrx xxi xxl xxo xxx