-er -ey a-a a-t aaa aae aar aat aau aax aay aea aee aer aet aeu aex aey ar- ara are arr art aru arx ary at- ata ate atr att atu atx au- aua aue aur aut aux ax- axa axe axr axt axx ay- aya aye ayr ayt ayu ayx eaa eae ear eat eau eax eea eee eer eet eex eey era ere err ert eru ery eta ete etr ett etu etx ety eu- eua eue eur eut eux ex- exa exe exr ext exu exx exy eya eye eyr eyt ra- raa rae rar rat rau rax ray re- rea ree rer ret reu rex rey rra rrr rrt rru rta rte rtr rtt rtu rtx rty rua rue rur rut ruu rux ruy rxr ry- rya rye ryr ryu ryy t-x taa tae tar tat tau tax tay te- tea tee ter tet teu tex tey tra tre trr trt tru trx try tta tte ttr ttt ttu ttx tty tua tue tur tut tuu tux tuy txe txt txu tya tye tyr tyt ua- uaa uae uar uat uau uay uea uee uer uet uey ur- ura ure urr urt uru urx ury uta ute utr utt utu utx uty uua uue uur uut uuu uxr uxt uxu uyu xaa xar xat xau xee xer xet xeu xex xrt xrx xry xtr xtx xty xue xxx xxy xyr xyy yaa yae yar yat yau yax yay yea yee yer yet yex yey yra yre yrt yru yta yte ytr ytt ytu yua yue yur yut yuu yux yuy yxa yxe yxy yye yyt yyu yyy