a-a a-t aaa aao aas aat aau aax aoa aoo aos aot aou aox as- asa aso ass ast asu asx at- ata ato ats att atu atx au- aua auo aus aut aux ax- axa axo axs axt axx oaa oao oas oat oau oax oo- ooa ooo oos oot oox os- osa oso oss ost osu osx ot- ota oto ots ott otu ou- oua ouo ous out ox- oxa oxo oxt oxx saa sao sas sat sau sax soa soo sos sot sou sox ss- ssa sso sss sst ssu ssx sta sto sts stt stu stx sua suo sus sut suu sux sxs sxt sxu t-x taa tao tas tat tau tax to- toa too tos tot tou tox tsa tso tss tst tsu tsx tta tto tts ttt ttu ttx tua tuo tus tut tuu tux txs txt txu ua- uaa uao uas uat uau uoa uoo uos uot uox usa uso uss ust usu usx uta uto uts utt utu utx uua uus uut uuu uxo uxt uxu xaa xas xat xau xoa xoo xos xot xox xsa xss xst xts xtx xus xxo xxx