-er a-a a-i a-t aaa aae aai aar aas aat aau aax aea aee aei aer aes aet aeu aex ai- aia aie aii air ais ait aiu aix ar- ara are ari arr ars art aru arx as- asa ase asi asr ass ast asu asx at- ata ate ati atr ats att atu atx au- aua aue aui aur aus aut aux ax- axa axe axi axr axs axt axx eaa eae eai ear eas eat eau eax eea eee eer ees eet eex eia eie eii eir eis eit eiu eix era ere eri err ers ert eru es- esa ese esi esr ess est esu esx eta ete eti etr ets ett etu etx eu- eua eue eui eur eus eut eux ex- exa exe exi exr exs ext exu exx ia- iaa iae iai iar ias iat iau ie- iea iee iei ier ies iet iex iia iie iii iir iis iit iiu iix ir- ira ire iri irr irs irt iru irx is- isa ise isi isr iss ist isu ita ite iti its itt itu itx iu- iua iue iui iur ius iut ixe ixi ra- raa rae rai rar ras rat rau rax re- rea ree rei rer res ret reu rex ria rie rii rir ris rit rix rra rri rrr rrs rrt rru rsa rse rsi rsr rss rst rsu rsx rta rte rti rtr rts rtt rtu rtx rua rue rui rur rus rut ruu rux rxr rxs saa sae sai sar sas sat sau sax se- sea see sei ser ses set seu sex sia sie sii sir sis sit siu six sr- sra sre sri srr srs srt srx ss- ssa sse ssi ssr sss sst ssu ssx sta ste sti str sts stt stu stx sua sue sui sur sus sut suu sux sxi sxs sxt sxu t-x taa tae tai tar tas tat tau tax te- tea tee tei ter tes tet teu tex tia tie tii tir tis tit tiu tix tra tre tri trr trs trt tru trx tsa tse tsi tsr tss tst tsu tsx tta tte tti ttr tts ttt ttu ttx tua tue tui tur tus tut tuu tux txe txi txs txt txu ua- uaa uae uai uar uas uat uau uea uee uei uer ues uet uia uie uii uir uis uit uiu ur- ura ure uri urr urs urt uru urx usa use usi usr uss ust usu usx uta ute uti 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 xia xie xii xis xit xiu xix xrt xrx xsa xsi xss xst xti xtr xts xtx xue xui xus xxi xxx