-er -ey a-a a-t aaa aae aar aas aat aax aay aea aee aer aes aet aex aey ar- ara are arr ars art arx ary as- asa ase asr ass ast asx asy at- ata ate atr ats att atx ax- axa axe axr axs axt axx ay- aya aye ayr ays ayt ayx eaa eae ear eas eat eax eea eee eer ees eet eex eey era ere err ers ert ery es- esa ese esr ess est esx esy eta ete etr ets ett etx ety ex- exa exe exr exs ext exx exy eya eye eyr eys eyt ra- raa rae rar ras rat rax ray re- rea ree rer res ret rex rey rra rrr rrs rrt rsa rse rsr rss rst rsx rta rte rtr rts rtt rtx rty rxr rxs ry- rya rye ryr rys ryy saa sae sar sas sat sax say se- sea see ser ses set sex sey sr- sra sre srr srs srt srx sry ss- ssa sse ssr sss sst ssx sta ste str sts stt stx sty sxs sxt sy- sya sye syr sys syt syx t-x taa tae tar tas tat tax tay te- tea tee ter tes tet tex tey tra tre trr trs trt trx try tsa tse tsr tss tst tsx tsy tta tte ttr tts ttt ttx tty txe txs txt tya tye tyr tys tyt xaa xar xas xat xee xer xes xet xex xrt xrx xry xsa xss xst xtr xts xtx xty xxx xxy xyr xyy yaa yae yar yas yat yax yay yea yee yer yes yet yex yey yra yre yrs yrt ysa yse ysr yss yst ysy yta yte ytr yts ytt yxa yxe yxy yye yys yyt yyy