1.   He was determined never to let that mistake happen again.

2.   If Leeds have cocked up you can see why the fans would be a bit upset, but I guess mistakes do happen.

3.   The fact that mistakes happened was irrelevant.

4.   And as anyone will tell you, mistakes can happen.

5.   And the lawsuit states that the situation could have been avoided, and that policies should have been in place because similar mistakes have happened before.

6.   And when you combine humans and computers, occasionally mistakes happen.

7.   ANYWAY, my point is that mistakes happen and we need to be forgiving.

8.   At the very least, a column gives readers some insight into how mistakes happen.

9.   A mistake has happened, and he knows the consequences.

10.   A spokesman for Monsanto said the St. Louis-based company is trying to find out how the mistake happened.