7 letter words
FURTHER​13
6 letter words (4 words)
FUHRER​12
RUTHER​9
HURTER​9
RETURF​9
5 letter words
TRUER​5
FURTH​11
4 letter words (16 words)
TRUE​4
HURT​7
THRU​7
RUTH​7
TURF​7
FRET​7
HEFT​10
TREF​7
FURR​7
ERHU​7
HUER​7
REFT​7
RUER​4
TEHR​7
TERF​7
TURR​4
3 letter words (22 words)
HER​6
REF​6
FUR​6
HET​6
RET​3
ERR​3
RUE​3
HUT​6
HUE​6
ETH​6
FER​6
UTE​3
EFT​6
URE​3
RUT​3
FET​6
ERF​6
FEU​6
REH​6
FEH​9
2 letter words (11 words)
HE​5
RE​2
ET​2
UT​2
ER​2
TE​2
FE​5
EF​5
UR​2
EH​5
UH​5