Double Three
A double three is a complex sideways correction made of two simple corrective patterns joined by a connecting wave labeled X. The full structure is labeled W-X-Y, where W and Y can each be a zigzag, a flat, or (in the final position) a triangle. Markets build double threes when the first correction fails to consume enough time or price to complete the job, so the market runs a second corrective pattern to finish it. Double threes are common in Wave 4 and Wave B positions and tend to drift sideways rather than retrace deeply, which distinguishes them from double zigzags. Counting them in real time takes patience: the X wave often looks like the start of a new impulse and traps traders into premature entries. If the supposed impulse starts overlapping, you are probably still inside the correction.
Gold corrects in Wave 4: first a flat drops from $2,410 to $2,355 (W), then a three-wave bounce to $2,395 (X), then a triangle drifts sideways for two weeks (Y). Flat plus triangle joined by an X wave is a textbook double three.