I1N1S1H4E1A1T1H4I1N1G2
18 points
INSHEATHING is validvalid
INSHEATH, to ensheath / INSHEATHE, to ensheathe
INSHEATH, to enclose in a sheath, also ENSHEATH
INSHEATH, to ensheath / INSHEATHE, to ensheathe
INSHEATH, to enclose in a sheath, also ENSHEATH