7 letter words
FOREVER​13
6 letter words
FERVOR​12
5 letter words (7 words)
REFER​8
FEVER​11
ROVER​8
FREER​8
FRERE​8
FERER​8
FRORE​8
4 letter words (14 words)
FREE​7
OVER​7
EVER​7
REEF​7
FORE​7
ROVE​7
VEER​7
FERE​7
EREV​7
FEER​7
EVOE​7
FROE​7
ORFE​7
RORE​4
3 letter words (20 words)
FOR​6
FEE​6
REF​6
EVE​6
REV​6
ERR​3
ORE​3
ROE​3
EVO​6
VOR​6
ORF​6
FOE​6
FRO​6
FER​6
ERE​3
REE​3
VEE​6
REO​3
ERF​6
VOE​6
2 letter words (8 words)
OF​5
OR​2
RE​2
EE​2
ER​2
FE​5
EF​5
OE​2