Er. I'm not sure or else what, really. I suppose Ifnkovhgroghprm wouldn't have helped him, perhaps, but I've never given it much thought, to be honest.

Only two. He'd found a scrap of paper in the witch's gingerbread house that said "Sometimes it is wise to think backwards", which was one clue, and Ifnkovhgroghprm told him the same thing, himself--that he needed to think backwards, and that if he couldn't, then he was an, er...alphabetical imbecile, I think, as he put it.