-er a-a a-t aaa aae aar aas aat aau aax aea aee aer aes aet aeu aex ar- ara are arr ars art aru arx as- asa ase asr ass ast asu asx at- ata ate atr ats att atu atx au- aua aue aur aus aut aux ax- axa axe axr axs axt axx eaa eae ear eas eat eau eax eea eee eer ees eet eex era ere err ers ert eru es- esa ese esr ess est esu esx eta ete etr ets ett etu etx eu- eua eue eur eus eut eux ex- exa exe exr exs ext exu exx ra- raa rae rar ras rat rau rax re- rea ree rer res ret reu rex rra rrr rrs rrt rru rsa rse rsr rss rst rsu rsx rta rte rtr rts rtt rtu rtx rua rue rur rus rut ruu rux rxr rxs saa sae sar sas sat sau sax se- sea see ser ses set seu sex sr- sra sre srr srs srt srx ss- ssa sse ssr sss sst ssu ssx sta ste str sts stt stu stx sua sue sur sus sut suu sux sxs sxt sxu t-x taa tae tar tas tat tau tax te- tea tee ter tes tet teu tex tra tre trr trs trt tru trx tsa tse tsr tss tst tsu tsx tta tte ttr tts ttt ttu ttx tua tue tur tus tut tuu tux txe txs txt txu ua- uaa uae uar uas uat uau uea uee uer ues uet ur- ura ure urr urs urt uru urx usa use usr uss ust usu usx uta ute utr uts utt utu utx uua uue uur uus uut uuu uxr uxt uxu xaa xar xas xat xau xee xer xes xet xeu xex xrt xrx xsa xss xst xtr xts xtx xue xus xxx