-er a-a a-i a-t aaa aae aai aar aas aat aav aax aea aee aei aer aes aet aev aex ai- aia aie aii air ais ait aiv aix ar- ara are ari arr ars art arv arx as- asa ase asi asr ass ast asv asx at- ata ate ati atr ats att atv atx av- ava ave avi avr avs avt avx ax- axa axe axi axr axs axt axv axx eaa eae eai ear eas eat eav eax eea eee eer ees eet eev eex eia eie eii eir eis eit eiv eix era ere eri err ers ert erv es- esa ese esi esr ess est esv esx eta ete eti etr ets ett etv etx eva eve evi evr evs evt evv ex- exa exe exi exr exs ext exx i-v ia- iaa iae iai iar ias iat iav ie- iea iee iei ier ies iet iev iex iia iie iii iir iis iit iix ir- ira ire iri irr irs irt irv irx is- isa ise isi isr iss ist isv ita ite iti its itt itv itx iva ive ivi ivr ivs ivt ivv ivx ixe ixi ra- raa rae rai rar ras rat rav rax re- rea ree rei rer res ret rev rex ria rie rii rir ris rit riv rix rra rri rrr rrs rrt rsa rse rsi rsr rss rst rsv rsx rta rte rti rtr rts rtt rtv rtx rva rve rvi rvr rvs rvt rvv rxr rxs saa sae sai sar sas sat sav sax se- sea see sei ser ses set sev sex sia sie sii sir sis sit siv six sr- sra sre sri srr srs srt srv srx ss- ssa sse ssi ssr sss sst ssv ssx sta ste sti str sts stt stv stx sva sve svi svr svs svt svv svx sxi sxs sxt t-x taa tae tai tar tas tat tav tax te- tea tee tei ter tes tet tev tex tia tie tii tir tis tit tiv tix tra tre tri trr trs trt trv trx tsa tse tsi tsr tss tst tsv tsx tta tte tti ttr tts ttt ttv ttx tva tve tvi tvr tvs tvt tvx txe txi txs txt v-a v-e vaa vae vai var vas vat vav vax vea vee vei ver ves vet vex vi- via vie vii vir vis vit viv vix vra vre vri vrr vrs vrt vsa vse vsi vsr vss vst vsv vta vte vti vtr vts vtt vtv vtx vva vvi vvr vvs vvt vvv vxa vxr vxs vxv xaa xar xas xat xav xee xer xes xet xev xex xia xie xii xis xit xiv xix xrt xrx xsa xsi xss xst xti xtr xts xtv xtx xvi xvt xxi xxv xxx