eeee eees eefe eese eesi eesy efes effi effs effy efsi eiei eies eifs eise eiss eisy esee eses esfs esie esis esse essi essu essy esuf esui esus eufi euse eyes eyey eyfi eyse fees fefe feff fefi feie feis fese fess feus feys ffee ffff ffii ffss fief fies fife fiff fifi fiii fise fisi fiss fisu fsfi fssf fuff fufu fuse fusi fuss fusu fuyu fyfe fyfi ieie iesi iesu ifes iffy ifis iies iiie iiii iiis iisi iisu isee ises isie isis isse issf issi isss issu issy isus isys iuef iuiu iuse iuss iyse s-ii se-e se-f se-i se-s se-u se-y seef sees seeu seey seff sefi seie seif seii seis seiu sese sesi sess seui seye seyf seys sfss sfsu sief sies sife siff sifu sify sise sisi siss sisu sisy siue siui sius siyi siyu ssee sses ssis sssf sssi ssss suee sues sueu suey suf- suff sufi sufs sufu suie suis sus- suse susi suss susu susy suus suyi suyu syes syfe syff syfy syis syse syss syue u-ie uess ueys uffe uies uise usee usef uses usfi usfs usie usif usis usse ussf usss ussu ussy usui usus uusi uuuu ye-u yees yefe yeff yeie yeii yesi yess yesu yeue yeye yeyi yiff yise yiss ysee yses ysii ysse yssu ysue yuff yufu yuie yuye yuyu yyfe yyff yyyy