// = (6,5)(6, 3)(6, 2)(5, 3)(3, 5)(2, 2)(1, 3)(1, 2)(2, 5)(1, 5)(4, 4)
}
private void setUpColumnActivityWithBadSDRScore() {
// imagine a region that is 8 by 8 columns
ColumnPosition columnPosition00 = new ColumnPosition(0, 0);
ColumnPosition columnPosition01 = new ColumnPosition(0, 1);
ColumnPosition columnPosition10 = new ColumnPosition(1, 0);
ColumnPosition columnPosition11 = new ColumnPosition(1, 1);
ColumnPosition columnPosition02 = new ColumnPosition(0, 2);
ColumnPosition columnPosition20 = new ColumnPosition(2, 0);
this.columnActivityWithBadSDRScore = new HashSet<ColumnPosition>();
this.columnActivityWithBadSDRScore.add(columnPosition00);
this.columnActivityWithBadSDRScore.add(columnPosition01);
this.columnActivityWithBadSDRScore.add(columnPosition10);
this.columnActivityWithBadSDRScore.add(columnPosition11);