[du-] Dumbledore is in the [4] bathroom of the [-_] house, building a wizard 广 shack. He has a 廿 bucket balanced on a 又 folding stool, and uses his wand to cast a spell: "SHACKUS DEGREESUS". It doesn't work. He tilts the 又 folding stool and couple of 度 degrees and recasts the spell. Poof! The 廿 bucket and 又 folding stool turn into a wizard 广 shack. The key was the tilt of the 廿 bucket in 度 degrees.