a-a a-t aaa aae aao aas aat aax aea aee aeo aes aet aex aoa aoe aoo aos aot aox as- asa ase aso ass ast asx at- ata ate ato ats att atx ax- axa axe axo axs axt axx eaa eae eao eas eat eax eea eee eeo ees eet eex eo- eoa eoe eoo eos eot es- esa ese eso ess est esx eta ete eto ets ett etx ex- exa exe exo exs ext exx oaa oae oao oas oat oax oea oee oeo oes oet oex oo- ooa ooo oos oot oox os- osa ose oso oss ost osx ot- ota ote oto ots ott ox- oxa oxo oxt oxx saa sae sao sas sat sax se- sea see seo ses set sex soa soe soo sos sot sox ss- ssa sse sso sss sst ssx sta ste sto sts stt stx sxs sxt t-x taa tae tao tas tat tax te- tea tee teo tes tet tex to- toa toe too tos tot tox tsa tse tso tss tst tsx tta tte tto tts ttt ttx txe txs txt xaa xas xat xee xes xet xex xoa xoo xos xot xox xsa xss xst xts xtx xxo xxx