4 letters
- feta7
- fets7
- feus8
- fiar7
- fiat7
- fibs10
- fice10
- fico10
- fido8
- fids8
- fief10
- fife10
- figs9
- fila8
- file8
- fill9
- film11
- filo8
- fils8
- find9
- fine8
- fink12
- fino8
- fins8
- fire7
- firn8
- firs7
- fisc10
- fish9
- fist7
- fits7
- five11
- flab11
- flag10
- flak12
- flam11
- flan9
- flap11
- flat8
- flaw11
- flax15
- flay10
- flea8
- fled9
- flee8
- flew11
- flex15
- fley10
- flic11
- flip11
- flit8
- floc11
- floe8
- flog10
- flop11
- flow11
- flub12
- flue9
- flus9
- foal8
- foam10
- fobs10
- foci10
- foes7
- fogs9
- fohn10
- foil8
- foin8
- fold9
- folk12
- fond9
- fons8
- font8
- food8
- fool8
- foot7
- fops10
- fora7
- forb10
- fore7
- foss7
- foul9
- fowl11
- foys9
- frae7
- froe7
- fubs11
- fuel9
- funs9
- fuse8
- fuss8
- gabs9
- gaen7
- gaes6
- gain7
- gale7
- gals7
- gane7
- gaol7
- gels7
- gens7
- gibe9
- gibs9
- gien7
- gies6
- gins7
- glen8
- glia7
- glib10
- glob10
- goal7
- goas6
- gobo9
- gobs9
- goes6
- golf10
- gone7
- goof9
- goon7
- goos6
- haen7
- haes6
- hail7
- hale7
- half10
- halo7
- heal7
- heil7
- helo7
- hens7
- hies6
- hila7
- hili7
- hins7
- hisn7
- hiss6
- hobo9
- hobs9
- hoes6
- hole7
- hols7
- hone7
- hons7
- hoof9
- hose6
- iamb10
- ibex14
- ibis7
- ices7
- icon8
- idea5
- ides5
- idle6
- idol6
- ikon9
- ilea5
- ilex12
- ilia5
- ilka9
- ilks9
- ills6
- inby10
- info8
- inia5
- inks9
- inly8
- inns6
- inro5
- inti5
- into5
- ions5
- iota4
- ires4
- iris4
- iron5
- isba7
- isle5
- isms7
- iwis7
- ixia11
- jabs16
- jail14
- jane14
- jean14
- jeon14
- jess13
- jiao13
- jibe16
- jibs16
- jinn15
- jins14
- jobs16
- joes13
- join14
- jole14
- joss13
- kabs11
- kaes8
- kafs11
- kaif11