-ene -one -yne eeee eefe eefn eeng eeny ef-g efen efeo effy efon egee egge eggo eggy egne egnx ego- egon egyo enee eneg eneo eney enge engg engo enne enny eno- enoe enon enoy enye enyo eone exen exfo exge exo- exon exxy eyen eyey eyne feen fefe feff fefo fege fegg fene feng fenn feny feof feon feyn ffee ffff fofo foge fogg fogn fogo fogy fone fong fono fony foof foon foxe foxx foxy foyn fyeg fyen fyeo fyfe fyne fynn geen gefe gege gegg gego gen- gene genf geng genn geno genx geny geo- geof geog geon geox geyn gfox ggfg gggg gnof gnoo goef goen gofe goff gogo gon- gone gong gonn gono gony goof goog goon goye goyf gyge gyn- gyne gyng gyno neef neen nefe neff nege nego nene neng neno neo- neon neoo neox nexe nexo nexx neye neyf neyg neyn neyo nfff nfon ngef ngen ngon nngn nnnn nofx nogg nogo non- none nong nonn nono nonx noo- noon nooo noye noyo nyen nyne nyny nyon o-eo oen- oeno oeye oeyo ofen off- offe offo offy ofgo ofno ogee ogen ogfy ogge oggy ogog ogon one- onee oneg oneo onex oney onge ongo onne onno onon onoy onyx ooff oofy oone oooo oxen oxo- oxof oxon oxox oxxo oxy- oxyn oyee oyen oyne oyon xefe xen- xene xenn xeno xeon xexe xnee xong xoxo xoyo xxxo xxxx xxxy xyne yeen yefe yeff yegg yego yene yeng yeof yeon yeox yeye yeyo ygoe ygon ynge ynne ynon yoen yoff yogo yone yong yono yoof yoon yoxe yoye yoyn yoyo yyfe yyff yyyy