-ene -ine -one eeee eefe eefn eero efen efeo effi efon efor eiei eien eier eine eini eino eion eire eirn enee eneo ener enif enin enio enix enne enni eno- enoe enon enri eoin eoir eone eore eori er-x erei eren erer erfx erie erin erio erne erni erno eroe eroi eron eroo erre erro exen exer exfo exif exin exo- exon exor exrx feen feer fefe feff fefi fefo feie fein feio feir fene feni fenn feof feon fere fern fero ferr ffee ffff ffii ffrr fief fien fier fife fiff fifi fifo fiii fine fini finn fino fioe fion fior fire firn fixe fixx foer fofo foie foin foix fone fono foof foon for- fore fori forn foro forr foxe foxx free frei fren freo frex frie frin frio froe fron i-no ieie ieio iere ieri ifen ifer ifex ifni ifno ifnr ifor ifrf ifri iiie iiii iiio iino iioi iioo inee inex infi info inne inni inno innr ino- inoi inon inor inox inre inri inro ioee ioii ioio ione ioni ionn iono ioof iooi iooo iore iori iree iren irer irex irfe iri- irie irin irio irix irne iron irre irri ixxi n-ii neef neei neen neer nefe neff nefi neif nein neir nene neni neno neo- neon neoo neox nere nerf neri nero nerr nexe nexi nexo nexx nfer nfff nfix nfon nief nien nieo nier nife niff niir nine nini nino nion nioo nire niro nixe nixi nnnn noer nofi nofx noie noif noin noio noir noix non- none noni nonn nono nonx noo- noon nooo noor nor- nore norf nori norn noro norr nren nron o-eo oen- oeno oere ofen ofer off- offe offo offr ofno ofor ofre oier oiii oion oire one- onee onei oneo oner onex onie onir onix onne onni onno onon onor ooer ooff oone oooo oore ore- oren oreo orer orex orfe orff orfi ori- orie orif orin orio orix orne orni orno oro- oroe orof oron oror orri orro oxen oxer oxi- oxie oxo- oxof oxon oxox oxxo reef reen refe reff refi refn refr reif reii rein reir rene reni renn reno reof rere reri rero rexx rfef rief rien rier riex rife riff riif riin rine rinf rinn rino rion rire riri rixe rixo rnie rnin roen roer rofe roff rofo roif roin roio roir rone roni rono roof rooi roon roor roox rore rori roro roxo rrif rrrr x-fi xeer xefe xen- xene xeni xenn xeno xeon xer- xero xexe xfer xfin xiii xine xion xixi xnee xorn xoro xoxo xxii xxix xxxi xxxo xxxx