15. In a $1 \times 5$ grid, there are four chips, each with one side white and the other side black. Each operation allows you to select a chip to jump over one, two, or three chips to an empty position, but not to move it directly. The chips that are jumped over must be flipped, but the jumping chip remains the same. Now, it is desired to transform the situation on the left into the situation on the right in six operations. If the positions of the chips before they jump are recorded in sequence, a six-digit number can be formed. Please provide a possible six-digit number that can accomplish the task. $\qquad$ (Provide one possible answer only).
【Analysis】 251425 or 152415 Test Point: Operational Question; 251425 Operation as follows: