-al -er -ol a-a aaa aae aal aao aar aax aea aee ael aeo aer aex al- ala ale all alo alr alx aoa aoe aol aoo aor aox ar- ara are arl aro arr arx ax- axa axe axl axo axr axx eaa eae eal eao ear eax eea eee eel eeo eer eex ela ele ell elo elr elx eo- eoa eoe eol eoo eor era ere erl ero err ex- exa exe exl exo exr exx la- laa lae lal lao lar lax lea lee lel leo ler lex lla lle lll llo llr loa loe lol loo lor lox lra lro lrr lxo lxr lxx oaa oae oal oao oar oax oea oee oel oeo oer oex ola ole oll olo oo- ooa ool ooo oor oox or- ora ore orl oro orr orx ox- oxa oxo oxx ra- raa rae ral rao rar rax re- rea ree rel reo rer rex rla rle rll rlo rlr roa roe rol roo ror rox rra rrl rrr rxr xaa xal xar xee xel xer xex xla xlr xoa xoo xor xox xrx xxl xxo xxx