4 letters
- fano8
- fans8
- fard8
- fare7
- farl8
- farm10
- faro7
- fart7
- fash9
- fast7
- fate7
- fats7
- faun9
- faux15
- fays9
- feal8
- fear7
- feat7
- felt8
- fems10
- feta7
- fets7
- feus8
- fiar7
- fiat7
- fila8
- film11
- filo8
- fils8
- firm10
- firs7
- fist7
- fits7
- flab11
- flag10
- flak12
- flam11
- flan9
- flap11
- flat8
- flaw11
- flax15
- flay10
- flea8
- flit8
- floc11
- floe8
- flog10
- flop11
- flow11
- flub12
- flue9
- flus9
- flux16
- foal8
- foam10
- fobs10
- foes7
- fogs9
- foil8
- fold9
- folk12
- fons8
- font8
- food8
- fool8
- foot7
- fops10
- fora7
- forb10
- ford8
- fore7
- fork11
- form10
- fort7
- foss7
- foul9
- four8
- fowl11
- foys9
- frae7
- frag9
- frap10
- frat7
- fray9
- fret7
- frit7
- froe7
- frog9
- from10
- frow10
- frug10
- fubs11
- fuds9
- fuel9
- fugs10
- full10
- fume11
- fumy13
- funs9
- furl9
- furs8
- fury10
- fuse8
- fuss8
- futz17
- gals7
- gams9
- gaol7
- gars6
- gast6
- gats6
- gaum10
- gaur7
- glom10
- glum11
- glut8
- goal7
- goas6
- goat6
- golf10
- goof9
- goos6
- gout7
- gram9
- grat6
- grot6
- grum10
- guar7
- gulf11
- guls8
- gums10
- gust7
- guts7
- haft9
- half10
- halm10
- halo7
- halt7
- hams9
- harl7
- harm9
- hart6
- hast6
- hats6
- haul8
- haut7
- hoar6
- holm10
- hols7
- holt7
- homo9
- hoof9
- hoot6
- hora6
- host6
- hots6
- hour7
- hula8
- hums10
- hurl8
- hurt7
- huts7
- iota4
- jams16
- jarl14
- jars13
- jato13
- jolt14
- jota13
- jots13
- jura14
- just14
- juts14
- kafs11
- kart8
- kats8
- koas8
- kola9
- kolo9
- kors8
- koto8
- labs8
- lacs8
- lads6
- lags7
- lair5
- lama8
- lamb11
- lame8
- lamp11
- lams8
- laps8
- lard6
- lari5
- lark9
- lars5
- lase5
- lash7
- lass5