The window design of a science and technology building in a middle school is shown in Figure 1. If each symbol (window shape) represents an Arabic numeral, and each horizontal line of three symbols from left to right is regarded as a three digit number, if it is known that the windows on the four floors correspond to four three digits, they are 837571206439, then according to the rule shown in Figure 1, 1992 should be the one in Figure 2______ ．

The window design of a science and technology building in a middle school is shown in Figure 1. If each symbol (window shape) represents an Arabic numeral, and each horizontal line of three symbols from left to right is regarded as a three digit number, if it is known that the windows on the four floors correspond to four three digits, they are 837571206439, then according to the rule shown in Figure 1, 1992 should be the one in Figure 2______ ．

From the pattern and the data provided, we can see that the second bit of 837439 is 3, so only the second and fourth lines are the two numbers. The figure at the end of the second and fourth lines is 7 or 9, and 571 is one of them. Only the second figure in the first line is the front 7 or 9 in the first and third lines, so the number in the first line is 571, the second line is 439, the third line is 206, and the fourth line is 837. Then 20 09 should be D in Figure 2, so D