6 letter words
INFANT​9
5 letter words
FAINT​8
FITNA​8
4 letter words (8 words)
ANTI​4
TINA​4
FIAT​7
TIAN​4
TAIN​4
FAIN​7
NAIN​4
NAIF​7
3 letter words (18 words)
INN​3
FAT​6
FAN​6
FIT​6
ANN​3
TIN​3
TAN​3
NAT​3
ANT​3
FIN​6
TAI​3
ITA​3
AFT​6
ANI​3
AIT​3
AIN​3
NIT​3
NAN​3
2 letter words (10 words)
IN​2
IT​2
AT​2
AN​2
IF​5
TA​2
AI​2
TI​2
FA​5
NA​2