4 letters
- foil8
- forb10
- fore7
- frae7
- free7
- fret7
- frig9
- frit7
- friz16
- froe7
- fubs11
- fuel9
- full10
- furl9
- furs8
- fuse8
- gels7
- gibe9
- gibs9
- gies6
- gill8
- girl7
- glib10
- heil7
- heir6
- hell8
- herb9
- herl7
- hers6
- hies6
- hili7
- hill8
- hire6
- ibex14
- ibis7
- ices7
- ides5
- idle6
- iffy12
- ilea5
- ilex12
- ilia5
- ilks9
- ills6
- illy8
- ired5
- ires4
- irid5
- iris4
- irks8
- isba7
- isle5
- iwis7
- jell15
- jibe16
- jibs16
- jiff19
- jill15
- kefs11
- keir8
- kerb11
- kerf11
- kibe11
- kief11
- kier8
- kifs11
- kill10
- kirs8
- kris8
- labs8
- lair5
- lari5
- lars5
- lase5
- leaf8
- leal6
- lear5
- leas5
- leer5
- lees5
- left8
- legs7
- lehr7
- leis5
- leks9
- lens6
- less5
- lest5
- lets5
- leys7
- liar5
- libs8
- lice8
- lids6
- lied6
- lief8
- lien6
- lier5
- lies5
- lieu6
- life8
- lift8
- like9
- lilt6
- lily8
- limb11
- lime8
- line6
- lins6
- lipe8
- lips8
- lira5
- lire5
- liri5
- lisp8
- list5
- lite5
- lits5
- live9
- lobe8
- lobs8
- lore5
- lose5
- lube9
- lues6
- luff12
- lure6
- lwei8
- lyes7
- lyre7
- lyse7
- mell9
- mels8
- merl8
- mibs10
- miff13
- mile8
- mill9
- mils8
- mire7
- miri7
- mirs7
- mise7
- nebs8
- neif8
- nibs8
- nill7
- nils6
- nisi5
- obes7
- obis7
- offs10
- oils5
- oles5
- orbs7
- ores4
- orle5
- pelf11
- peri7
- pier7
- pies7
- pile8
- pili8
- pill9
- pleb11
- plie8
- raff10
- rail5
- rale5
- rase4
- real5
- rebs7
- recs7
- reds5
- reef7
- reel5
- rees4
- refs7
- reft7
- regs6
- reif7
- rein5
- reis4
- rely7
- rems7
- reps7
- resh6
- rest4
- rets4
- revs8
- rial5
- rias4
- ribs7
- rice7
- ride5
- rids5
- riel5
- rife7
- riff10
- rifs7