a-a a-c a-t aaa aac aae aao aas aat aau aax ac- aca acc ace aco acs act acu acx aea aec aee aeo aes aet aeu aex aoa aoc aoe aoo aos aot aou aox as- asa asc ase aso ass ast asu asx at- ata atc ate ato ats att atu atx au- aua auc aue auo aus aut aux ax- axa axe axo axs axt axx c-- caa cac cae cao cas cat cau cax cca ccc cce cco ccs cct ccu ccx ce- cea cec cee ceo ces cet ceu cex co- coa coc coe coo cos cot cou cox csa csc cse cso css cst csu csx cta ctc cte cto cts ctt ctu ctx cua cuc cue cuo cus cut cuu cxc cxo cxs cxt cxx eaa eac eae eao eas eat eau eax ec- eca ecc ece eco ecs ect ecu ecx eea eec eee eeo ees eet eex eo- eoa eoc eoe eoo eos eot eou es- esa esc ese eso ess est esu esx eta etc ete eto ets ett etu etx eu- eua euc eue eus eut eux ex- exa exc exe exo exs ext exu exx oaa oac oae oao oas oat oau oax oc- oca occ oco ocs oct ocu ocx oea oec oee oeo oes oet oex oo- ooa ooc ooo oos oot oox os- osa osc ose oso oss ost osu osx ot- ota otc ote oto ots ott otu ou- oua ouc oue ouo ous out ox- oxa oxc oxo oxt oxx saa sac sae sao sas sat sau sax sca scc sce sco scs sct scu scx se- sea sec see seo ses set seu sex soa soc soe soo sos sot sou sox ss- ssa ssc sse sso sss sst ssu ssx sta stc ste sto sts stt stu stx sua suc sue suo sus sut suu sux sxc sxs sxt sxu t-x taa tac tae tao tas tat tau tax tca tcc tce tco tcs tct tcu tcx te- tea tec tee teo tes tet teu tex to- toa toc toe too tos tot tou tox tsa tsc tse tso tss tst tsu tsx tta ttc tte tto tts ttt ttu ttx tua tuc tue tuo tus tut tuu tux txe txs txt txu ua- uaa uac uae uao uas uat uau uca ucc uce uco ucs uct ucu uea uec uee ues uet uoa uoc uoe uoo uos uot uox usa usc use uso uss ust usu usx uta utc ute uto uts utt utu utx uua uuc uue uus uut uuu uxc uxo uxt uxu xaa xac xas xat xau xcx xee xes xet xeu xex xoa xoc xoo xos xot xox xsa xsc xss xst xtc xts xtx xue xus xxo xxx