-er -ol eee eel eeo eer eet eex ele ell elo elr elt elx eo- eoe eol eoo eor eot ere erl ero err ert ete etl eto etr ett etx ex- exe exl exo exr ext exx lee lel leo ler let lex lle lll llo llr llt loe lol loo lor lot lox lro lrr lrt lte ltl lto ltr ltt ltx lxo lxr lxx oee oel oeo oer oet oex ole oll olo olt oo- ool ooo oor oot oox or- ore orl oro orr ort orx ot- ote otl oto otr ott ox- oxo oxt oxx re- ree rel reo rer ret rex rle rll rlo rlr rlt roe rol roo ror rot rox rrl rrr rrt rte rtl rto rtr rtt rtx rxr t-x te- tee tel teo ter tet tex tle tll tlo tlr tlt tlx to- toe tol too tor tot tox tre trl tro trr trt trx tte ttl tto ttr ttt ttx txe txl txt xee xel xer xet xex xlr xlt xoo xor xot xox xrt xrx xtr xtx xxl xxo xxx