S1T1A1M3M3E1R1
11 points
STAMMER is validvalid
to speak with involuntary breaks and pauses [v STAMMERED, STAMMERING, STAMMERS]
to speak with involuntary breaks and pauses [v -ED, -ING, -S]
to speak with involuntary breaks and pauses [v STAMMERED, STAMMERING, STAMMERS]
to speak with involuntary breaks and pauses [v -ED, -ING, -S]