-ol ddd dde ddl ddo dds ddt ddx de- ded dee del deo des det dex dl- dld dle dll dlo dls dlt dlx dod doe dol doo dos dot dox dsd dse dsl dso dss dst dsx dtd dte dtl dto dts dtt dtx dxd dxl dxo dxs dxt dxx ed- edd ede edl edo eds edt edx eed eee eel eeo ees eet eex eld ele ell elo els elt elx eo- eod eoe eol eoo eos eot es- esd ese esl eso ess est esx etd ete etl eto ets ett etx ex- exd exe exl exo exs ext exx ldd lde ldl ldo lds ldt led lee lel leo les let lex lld lle lll llo lls llt lod loe lol loo los lot lox lsd lse lsl lso lss lst ltd lte ltl lto lts ltt ltx lxd lxo lxx odd ode odl odo ods odt oed oee oel oeo oes oet oex old ole oll olo ols olt oo- ood ool ooo oos oot oox os- osd ose osl oso oss ost osx ot- otd ote otl oto ots ott ox- oxo oxt oxx sdd sde sdl sdo sds sdt se- sed see sel seo ses set sex sld sle sll slo sls slt slx sod soe sol soo sos sot sox ss- ssd sse ssl sso sss sst ssx std ste stl sto sts stt stx sxl sxs sxt t-x tdd tde tdl tdo tds tdt tdx te- ted tee tel teo tes tet tex tld tle tll tlo tls tlt tlx to- tod toe tol too tos tot tox tsd tse tsl tso tss tst tsx ttd tte ttl tto tts ttt ttx txe txl txs txt xde xds xdt xed xee xel xes xet xex xld xls xlt xod xoo xos xot xox xsl xss xst xts xtx xxl xxo xxx