eeee eees eers eery eese eesy er-x erer eres erre errs erse erur erus erye eryx esee eser eses esse essu essy esus euer eur- eure eury euse exer exes exrx exxy eyer eyes eyey eyre eyry eyse eyyr rees rere rers reru rery rese ress reue reus reuu reux rexx reye reys rrrr rsee rsre ruer rues rure rurs ruru ruse russ rusu rusy ruys rxes ryes rysy ryue se-e se-s se-u se-x se-y seer sees seeu seex seey sere serr sers seru sery sese sess seur seux sex- sexe sexy seye seys sres ssee sses ssex ssrs ssss suee suer sues sueu suey sur- sure surr surs suru sury sus- suse suss susu susy suus sux- suxe suyr suyu syer syes syre syrs syry syse syss syue syxe uers uess ueys ure- ures urex urey urre urry urse urss ursu ursy urur urus usee user uses usse ussr usss ussu ussy usus uuuu uxue uxus uyre xeer xer- xers xeus xexe xurs xuxu xxxx xxxy xyr- ye-u yeer yees yere yerr yers yery yess yesu yeue yeux yeye yeyr ysee yser yses ysse yssu ysue yuer yure yury yuxu yuye yuyu yyyy