4 letters
- file8
- fill9
- film11
- filo8
- fils8
- fine8
- fino8
- fire7
- firm10
- firn8
- firs7
- 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
- foal8
- foam10
- fobs10
- foci10
- foes7
- foil8
- foin8
- fold9
- folk12
- fool8
- fops10
- fora7
- forb10
- ford8
- fore7
- fork11
- form10
- fort7
- foul9
- four8
- fowl11
- frae7
- frag9
- frap10
- frat7
- fray9
- free7
- fret7
- frig9
- frit7
- friz16
- froe7
- frog9
- from10
- frow10
- fuel9
- fume11
- furl9
- gale7
- gamb12
- game9
- gamp12
- gaol7
- gape9
- garb9
- gear6
- germ9
- gibe9
- gimp12
- girl7
- giro6
- glee7
- glia7
- glib10
- glim10
- glob10
- glom10
- glop10
- goal7
- goer6
- golf10
- gore6
- gorp9
- grab9
- gram9
- gree6
- grim9
- grip9
- haem9
- hail7
- hair6
- hale7
- half10
- halm10
- halo7
- hame9
- hare6
- harl7
- harm9
- harp9
- heal7
- heap9
- hear6
- hebe9
- heel7
- heil7
- heir6
- helm10
- helo7
- help10
- heme9
- hemp12
- herb9
- here6
- herl7
- herm9
- hero6
- hila7
- hire6
- hoar6
- hoer6
- hole7
- holm10
- holp10
- home9
- hope9
- hora6
- iamb10
- ibex14
- idea5
- idem8
- idle6
- idol6
- ilea5
- ilex12
- ilia5
- ilka9
- imam10
- impi10
- imps10
- info8
- inro5
- iota4
- ired5
- ires4
- iron5
- isba7
- isle5
- item7
- izar13
- jail14
- jamb19
- jape16
- jarl14
- jeep16
- jeer13
- jefe16
- jiao13
- jibe16
- jimp19
- jole14
- kaif11
- kail9
- kale9
- kame11
- kami11
- kbar11
- keef11
- keel9
- keep11
- keir8
- kelp12
- kemp14
- kepi11
- kerb11
- kerf11
- kibe11
- kief11
- kier8
- kilo9
- koel9
- kola9