0.19 James W. Ney, Response to Donald A Daiker Andrew Kerek and Max Morenberg "Sentence-Combining and Syntactic Maturity in Freshman English", College Composition and Communication, 1978.

{ students student freshman class }	0.19
{ teaching students teachers teacher }	0.17
{ group program groups project }	0.10
{ sentence sentences paragraph paragraphs }	0.10