-er -ey eee eeo eer eet eex eey eo- eoe eoo eor eot eou ere ero err ert eru ery ete eto etr ett etu etx ety eu- eue eur eut eux ex- exe exo exr ext exu exx exy eye eyo eyr eyt oee oeo oer oet oex oey oo- ooo oor oot oox or- ore oro orr ort oru orx ory ot- ote oto otr ott otu ou- oue ouo our out ox- oxo oxt oxx oxy oye oyo re- ree reo rer ret reu rex rey roe roo ror rot rou rox roy rrr rrt rru rte rto rtr rtt rtu rtx rty rue ruo rur rut ruu rux ruy rxr ry- rye ryo ryr ryu ryy t-x te- tee teo ter tet teu tex tey to- toe too tor tot tou tox toy tre tro trr trt tru trx try tte tto ttr ttt ttu ttx tty tue tuo tur tut tuu tux tuy txe txt txu tye tyo tyr tyt uee uer uet uey uoe uoo uor uot uox ur- ure uro urr urt uru urx ury ute uto utr utt utu utx uty uue uur uut uuu uxo uxr uxt uxu uyo uyu xee xer xet xeu xex xoo xor xot xox xrt xrx xry xtr xtx xty xue xxo xxx xxy xyr xyy yee yeo yer yet yex yey yoe yoo yor yot you yox yoy yre yro yrt yru yte yto ytr ytt ytu yue yuo yur yut yuu yux yuy yxe yxy yye yyt yyu yyy