I1N1G2R1A1I1N1I1N1G2
12 points
INGRAINING is validvalid
INGRAIN, to impress firmly on the mind [v]
INGRAIN, to impress firmly on the mind, also ENGRAIN [v]
INGRAIN, to impress firmly on the mind [v]
INGRAIN, to impress firmly on the mind, also ENGRAIN [v]