    Others had definitely not been so lucky, in terms of brewing – Neville Longbottom, Seamus Finnigan, Crabbe and Goyle had ended up with perhaps the worst examples of a Cure for Boils potion in the class. Ron said that he suspected Seamus had only done so badly because his partner was Neville, but Harry thought it was Seamus’ fault as well. He should have been making sure his partner was following the recipe, after all. There was really no excuse for Crabbe and Goyle, however. Maybe it was just that the two boys shared a single brain cell between the two of them.