-er a-a a-t aaa aae aar aas aat aav aax aea aee aer aes aet aev aex ar- ara are arr ars art arv arx as- asa ase asr ass ast asv asx at- ata ate atr ats att atv atx av- ava ave avr avs avt avx ax- axa axe axr axs axt axv axx eaa eae ear eas eat eav eax eea eee eer ees eet eev eex era ere err ers ert erv es- esa ese esr ess est esv esx eta ete etr ets ett etv etx eva eve evr evs evt evv ex- exa exe exr exs ext exx ra- raa rae rar ras rat rav rax re- rea ree rer res ret rev rex rra rrr rrs rrt rsa rse rsr rss rst rsv rsx rta rte rtr rts rtt rtv rtx rva rve rvr rvs rvt rvv rxr rxs saa sae sar sas sat sav sax se- sea see ser ses set sev sex sr- sra sre srr srs srt srv srx ss- ssa sse ssr sss sst ssv ssx sta ste str sts stt stv stx sva sve svr svs svt svv svx sxs sxt t-x taa tae tar tas tat tav tax te- tea tee ter tes tet tev tex tra tre trr trs trt trv trx tsa tse tsr tss tst tsv tsx tta tte ttr tts ttt ttv ttx tva tve tvr tvs tvt tvx txe txs txt v-a v-e vaa vae var vas vat vav vax vea vee ver ves vet vex vra vre vrr vrs vrt vsa vse vsr vss vst vsv vta vte vtr vts vtt vtv vtx vva vvr vvs vvt vvv vxa vxr vxs vxv xaa xar xas xat xav xee xer xes xet xev xex xrt xrx xsa xss xst xtr xts xtv xtx xvt xxv xxx